10 files changed, 2313 insertions, 0 deletions
diff --git a/lib/public/FullTextSearch/Model/IDocumentAccess.php b/lib/public/FullTextSearch/Model/IDocumentAccess.php
new file mode 100644
index 00000000000..407f0f2bb28
--- /dev/null
+++ b/lib/public/FullTextSearch/Model/IDocumentAccess.php
@@ -0,0 +1,235 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * SPDX-FileCopyrightText: 2019 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OCP\FullTextSearch\Model;
+
+/**
+ * Interface IDocumentAccess
+ *
+ * This object is used as a data transfer object when
+ *
+ * - indexing a document,
+ * - generating a search request.
+ *
+ * During the index, it is used to define which users, groups, circles, ...
+ * have access to the IIndexDocument
+ *
+ * During the search, it is internally use to define to which group, circles, ...
+ * a user that perform the search belongs to.
+ *
+ * @see IIndexDocument::setAccess
+ *
+ * @since 16.0.0
+ *
+ */
+interface IDocumentAccess {
+	/**
+	 * Owner of the document can be set at the init of the object.
+	 *
+	 * @since 16.0.0
+	 *
+	 * IDocumentAccess constructor.
+	 *
+	 * @param string $ownerId
+	 */
+	public function __construct(string $ownerId = '');
+
+
+	/**
+	 * Set the Owner of the document.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @param string $ownerId
+	 *
+	 * @return IDocumentAccess
+	 */
+	public function setOwnerId(string $ownerId): IDocumentAccess;
+
+	/**
+	 * Get the Owner of the document.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @return string
+	 */
+	public function getOwnerId(): string;
+
+
+	/**
+	 * Set the viewer of the document.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @param string $viewerId
+	 *
+	 * @return IDocumentAccess
+	 */
+	public function setViewerId(string $viewerId): IDocumentAccess;
+
+	/**
+	 * Get the viewer of the document.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @return string
+	 */
+	public function getViewerId(): string;
+
+
+	/**
+	 * Set the list of users that have read access to the document.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @param array $users
+	 *
+	 * @return IDocumentAccess
+	 */
+	public function setUsers(array $users): IDocumentAccess;
+
+	/**
+	 * Add an entry to the list of users that have read access to the document.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @param string $user
+	 *
+	 * @return IDocumentAccess
+	 */
+	public function addUser(string $user): IDocumentAccess;
+
+	/**
+	 * Add multiple entries to the list of users that have read access to the
+	 * document.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @param array $users
+	 *
+	 * @return IDocumentAccess
+	 */
+	public function addUsers($users): IDocumentAccess;
+
+	/**
+	 * Get the complete list of users that have read access to the document.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @return array
+	 */
+	public function getUsers(): array;
+
+
+	/**
+	 * Set the list of groups that have read access to the document.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @param array $groups
+	 *
+	 * @return IDocumentAccess
+	 */
+	public function setGroups(array $groups): IDocumentAccess;
+
+	/**
+	 * Add an entry to the list of groups that have read access to the document.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @param string $group
+	 *
+	 * @return IDocumentAccess
+	 */
+	public function addGroup(string $group): IDocumentAccess;
+
+	/**
+	 * Add multiple entries to the list of groups that have read access to the
+	 * document.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @param array $groups
+	 *
+	 * @return IDocumentAccess
+	 */
+	public function addGroups(array $groups);
+
+	/**
+	 * Get the complete list of groups that have read access to the document.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @return array
+	 */
+	public function getGroups(): array;
+
+
+	/**
+	 * Set the list of circles that have read access to the document.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @param array $circles
+	 *
+	 * @return IDocumentAccess
+	 */
+	public function setCircles(array $circles): IDocumentAccess;
+
+	/**
+	 * Add an entry to the list of circles that have read access to the document.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @param string $circle
+	 *
+	 * @return IDocumentAccess
+	 */
+	public function addCircle(string $circle): IDocumentAccess;
+
+	/**
+	 * Add multiple entries to the list of groups that have read access to the
+	 * document.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @param array $circles
+	 *
+	 * @return IDocumentAccess
+	 */
+	public function addCircles(array $circles): IDocumentAccess;
+
+	/**
+	 * Get the complete list of circles that have read access to the document.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @return array
+	 */
+	public function getCircles(): array;
+
+
+	/**
+	 * Set the list of links that have read access to the document.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @param array $links
+	 *
+	 * @return IDocumentAccess
+	 */
+	public function setLinks(array $links): IDocumentAccess;
+
+	/**
+	 * Get the list of links that have read access to the document.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @return array
+	 */
+	public function getLinks(): array;
+}
diff --git a/lib/public/FullTextSearch/Model/IIndex.php b/lib/public/FullTextSearch/Model/IIndex.php
new file mode 100644
index 00000000000..13aee916498
--- /dev/null
+++ b/lib/public/FullTextSearch/Model/IIndex.php
@@ -0,0 +1,333 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * SPDX-FileCopyrightText: 2018 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OCP\FullTextSearch\Model;
+
+/**
+ * Interface IIndex
+ *
+ * Index are generated by FullTextSearch to manage the status of a document
+ * regarding the date of the last index and the date of the last modification
+ * of the original document.
+ *
+ * The uniqueness of an IIndexDocument is made by the Id of the Content Provider
+ * and the Id of the original document within the Content Provider.
+ *
+ * We will call original document the source from which the IIndexDocument is
+ * generated. As an example, an original document can be a file, a mail, ...
+ *
+ * @since 15.0.0
+ *
+ */
+interface IIndex {
+	/**
+	 * @since 15.0.0
+	 */
+	public const INDEX_OK = 1;
+
+	/**
+	 * @since 15.0.0
+	 */
+	public const INDEX_IGNORE = 2;
+
+	/**
+	 * @since 15.0.0
+	 */
+	public const INDEX_META = 4;
+
+	/**
+	 * @since 15.0.0
+	 */
+	public const INDEX_CONTENT = 8;
+
+	/**
+	 * @since 16.0.0
+	 */
+	public const INDEX_PARTS = 16;
+
+	/**
+	 * @since 15.0.0
+	 */
+	public const INDEX_FULL = 28;
+
+	/**
+	 * @since 15.0.0
+	 */
+	public const INDEX_REMOVE = 32;
+
+	/**
+	 * @since 15.0.0
+	 */
+	public const INDEX_DONE = 64;
+
+	/**
+	 * @since 15.0.0
+	 */
+	public const INDEX_FAILED = 128;
+
+	/**
+	 * @since 15.0.0
+	 */
+	public const ERROR_FAILED = 1;
+
+	/**
+	 * @since 15.0.0
+	 */
+	public const ERROR_FAILED2 = 2;
+
+	/**
+	 * @since 15.0.0
+	 */
+	public const ERROR_FAILED3 = 4;
+
+	/**
+	 * @since 15.0.0
+	 */
+	public const ERROR_SEV_1 = 1;
+
+	/**
+	 * @since 15.0.0
+	 */
+	public const ERROR_SEV_2 = 2;
+
+	/**
+	 * @since 15.0.0
+	 */
+	public const ERROR_SEV_3 = 3;
+
+	/**
+	 * @since 15.0.0
+	 */
+	public const ERROR_SEV_4 = 4;
+
+
+	/**
+	 * Get the Id of the Content Provider.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return string
+	 */
+	public function getProviderId(): string;
+
+
+	/**
+	 * Get the Id of the original document.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return string
+	 */
+	public function getDocumentId(): string;
+
+
+	/**
+	 * Get the collection of the index.
+	 * If empty (''), means collection is the default one used by the internal framework
+	 *
+	 * @since 24.0.0
+	 *
+	 * @return string
+	 */
+	public function getCollection(): string;
+
+
+	/**
+	 * Set the source of the original document.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $source
+	 *
+	 * @return IIndex
+	 */
+	public function setSource(string $source): IIndex;
+
+	/**
+	 * Get the source of the original document.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return string
+	 */
+	public function getSource(): string;
+
+
+	/**
+	 * Set the owner of the original document.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $ownerId
+	 *
+	 * @return IIndex
+	 */
+	public function setOwnerId(string $ownerId): IIndex;
+
+	/**
+	 * Get the owner of the original document.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return string
+	 */
+	public function getOwnerId(): string;
+
+
+	/**
+	 * Set the current index status (bit flag) of the original document.
+	 * If $reset is true, the status is reset to the defined value.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param int $status
+	 * @param bool $reset
+	 *
+	 * @return IIndex
+	 */
+	public function setStatus(int $status, bool $reset = false): IIndex;
+
+	/**
+	 * Get the current index status of the original document.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return int
+	 */
+	public function getStatus(): int;
+
+	/**
+	 * Check if the document fit a specific status.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param int $status
+	 *
+	 * @return bool
+	 */
+	public function isStatus(int $status): bool;
+
+	/**
+	 * Remove a status.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param int $status
+	 *
+	 * @return IIndex
+	 */
+	public function unsetStatus(int $status): IIndex;
+
+
+	/**
+	 * Add an option related to the original document (as string).
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $option
+	 * @param string $value
+	 *
+	 * @return IIndex
+	 */
+	public function addOption(string $option, string $value): IIndex;
+
+	/**
+	 * Add an option related to the original document (as integer).
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $option
+	 * @param int $value
+	 *
+	 * @return IIndex
+	 */
+	public function addOptionInt(string $option, int $value): IIndex;
+
+	/**
+	 * Get the option related to the original document (as string).
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $option
+	 * @param string $default
+	 *
+	 * @return string
+	 */
+	public function getOption(string $option, string $default = ''): string;
+
+	/**
+	 * Get the option related to the original document (as integer).
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $option
+	 * @param int $default
+	 *
+	 * @return int
+	 */
+	public function getOptionInt(string $option, int $default = 0): int;
+
+	/**
+	 * Get all options related to the original document.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return array
+	 */
+	public function getOptions(): array;
+
+
+	/**
+	 * Add an error log related to the Index.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $message
+	 * @param string $exception
+	 * @param int $sev
+	 *
+	 * @return IIndex
+	 */
+	public function addError(string $message, string $exception = '', int $sev = self::ERROR_SEV_3): IIndex;
+
+	/**
+	 * Returns the number of known errors related to the Index.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return int
+	 */
+	public function getErrorCount(): int;
+
+	/**
+	 * Reset all error logs related to the Index.
+	 *
+	 * @since 15.0.0
+	 */
+	public function resetErrors(): IIndex;
+
+
+	/**
+	 * Set the date of the last index.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param int $lastIndex
+	 *
+	 * @return IIndex
+	 */
+	public function setLastIndex(int $lastIndex = -1): IIndex;
+
+	/**
+	 * Get the date of the last index.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return int
+	 */
+	public function getLastIndex(): int;
+}
diff --git a/lib/public/FullTextSearch/Model/IIndexDocument.php b/lib/public/FullTextSearch/Model/IIndexDocument.php
new file mode 100644
index 00000000000..ae93272d246
--- /dev/null
+++ b/lib/public/FullTextSearch/Model/IIndexDocument.php
@@ -0,0 +1,613 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * SPDX-FileCopyrightText: 2019 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OCP\FullTextSearch\Model;
+
+/**
+ * Class IIndexDocument
+ *
+ * This is one of the main class of the FullTextSearch, used as a data transfer
+ * object. An IIndexDocument is created to manage documents around FullTextSearch,
+ * during an index and during a search.
+ * The uniqueness of an IIndexDocument is made by the Id of the Content Provider
+ * and the Id of the original document within the Content Provider.
+ *
+ * We will call original document the source from which the IIndexDocument is
+ * generated. As an example, an original document can be a file, a mail, ...
+ *
+ * @since 15.0.0
+ */
+interface IIndexDocument {
+	/**
+	 * @since 15.0.0
+	 */
+	public const NOT_ENCODED = 0;
+
+	/**
+	 * @since 15.0.0
+	 */
+	public const ENCODED_BASE64 = 1;
+
+
+
+	/**
+	 * Returns the Id of the original document.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return string
+	 */
+	public function getId(): string;
+
+
+	/**
+	 * Returns the Id of the provider.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return string
+	 */
+	public function getProviderId(): string;
+
+
+	/**
+	 * Set the Index related to the IIndexDocument.
+	 *
+	 * @see IIndex
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param IIndex $index
+	 *
+	 * @return IIndexDocument
+	 */
+	public function setIndex(IIndex $index): IIndexDocument;
+
+	/**
+	 * Get the Index.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return IIndex
+	 */
+	public function getIndex(): IIndex;
+
+	/**
+	 * return if Index is defined.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @return bool
+	 */
+	public function hasIndex(): bool;
+
+
+	/**
+	 * Set the modified time of the original document.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param int $modifiedTime
+	 *
+	 * @return IIndexDocument
+	 */
+	public function setModifiedTime(int $modifiedTime): IIndexDocument;
+
+	/**
+	 * Get the modified time of the original document.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return int
+	 */
+	public function getModifiedTime(): int;
+
+	/**
+	 * Check if the original document of the IIndexDocument is older than $time.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param int $time
+	 *
+	 * @return bool
+	 */
+	public function isOlderThan(int $time): bool;
+
+
+	/**
+	 * Set the read rights of the original document using a IDocumentAccess.
+	 *
+	 * @see IDocumentAccess
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param IDocumentAccess $access
+	 *
+	 * @return $this
+	 */
+	public function setAccess(IDocumentAccess $access): IIndexDocument;
+
+	/**
+	 * Get the IDocumentAccess related to the original document.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return IDocumentAccess
+	 */
+	public function getAccess(): IDocumentAccess;
+
+
+	/**
+	 * Add a tag to the list.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $tag
+	 *
+	 * @return IIndexDocument
+	 */
+	public function addTag(string $tag): IIndexDocument;
+
+	/**
+	 * Set the list of tags assigned to the original document.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param array $tags
+	 *
+	 * @return IIndexDocument
+	 */
+	public function setTags(array $tags): IIndexDocument;
+
+	/**
+	 * Get the list of tags assigned to the original document.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return array
+	 */
+	public function getTags(): array;
+
+
+	/**
+	 * Add a meta tag to the list.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $tag
+	 *
+	 * @return IIndexDocument
+	 */
+	public function addMetaTag(string $tag): IIndexDocument;
+
+	/**
+	 * Set the list of meta tags assigned to the original document.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param array $tags
+	 *
+	 * @return IIndexDocument
+	 */
+	public function setMetaTags(array $tags): IIndexDocument;
+
+	/**
+	 * Get the list of meta tags assigned to the original document.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return array
+	 */
+	public function getMetaTags(): array;
+
+
+	/**
+	 * Add a sub tag to the list.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $sub
+	 * @param string $tag
+	 *
+	 * @return IIndexDocument
+	 */
+	public function addSubTag(string $sub, string $tag): IIndexDocument;
+
+	/**
+	 * Set the list of sub tags assigned to the original document.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param array $tags
+	 *
+	 * @return IIndexDocument
+	 */
+	public function setSubTags(array $tags): IIndexDocument;
+
+	/**
+	 * Get the list of sub tags assigned to the original document.
+	 * If $formatted is true, the result will be formatted in a one
+	 * dimensional array.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param bool $formatted
+	 *
+	 * @return array
+	 */
+	public function getSubTags(bool $formatted = false): array;
+
+
+	/**
+	 * Set the source of the original document.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $source
+	 *
+	 * @return IIndexDocument
+	 */
+	public function setSource(string $source): IIndexDocument;
+
+	/**
+	 * Get the source of the original document.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return string
+	 */
+	public function getSource(): string;
+
+
+	/**
+	 * Set the title of the original document.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $title
+	 *
+	 * @return IIndexDocument
+	 */
+	public function setTitle(string $title): IIndexDocument;
+
+	/**
+	 * Get the title of the original document.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return string
+	 */
+	public function getTitle(): string;
+
+
+	/**
+	 * Set the content of the document.
+	 * $encoded can be NOT_ENCODED or ENCODED_BASE64 if the content is raw or
+	 * encoded in base64.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $content
+	 * @param int $encoded
+	 *
+	 * @return IIndexDocument
+	 */
+	public function setContent(string $content, int $encoded = 0): IIndexDocument;
+
+	/**
+	 * Get the content of the original document.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return string
+	 */
+	public function getContent(): string;
+
+	/**
+	 * Returns the type of the encoding on the content.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return int
+	 */
+	public function isContentEncoded(): int;
+
+	/**
+	 * Return the size of the content.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return int
+	 */
+	public function getContentSize(): int;
+
+
+	/**
+	 * Generate an hash, based on the content of the original document.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return IIndexDocument
+	 */
+	public function initHash(): IIndexDocument;
+
+	/**
+	 * Set the hash of the original document.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $hash
+	 *
+	 * @return IIndexDocument
+	 */
+	public function setHash(string $hash): IIndexDocument;
+
+	/**
+	 * Get the hash of the original document.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return string
+	 */
+	public function getHash(): string;
+
+
+	/**
+	 * Add a part, identified by a string, and its content.
+	 *
+	 * It is strongly advised to use alphanumerical chars with no space in the
+	 * $part string.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $part
+	 * @param string $content
+	 *
+	 * @return IIndexDocument
+	 */
+	public function addPart(string $part, string $content): IIndexDocument;
+
+	/**
+	 * Set all parts and their content.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param array $parts
+	 *
+	 * @return IIndexDocument
+	 */
+	public function setParts(array $parts): IIndexDocument;
+
+	/**
+	 * Get all parts of the IIndexDocument.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return array
+	 */
+	public function getParts(): array;
+
+
+	/**
+	 * Add a link, usable by the frontend.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $link
+	 *
+	 * @return IIndexDocument
+	 */
+	public function setLink(string $link): IIndexDocument;
+
+	/**
+	 * Get the link.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return string
+	 */
+	public function getLink(): string;
+
+
+	/**
+	 * Set more information that couldn't be set using other method.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param array $more
+	 *
+	 * @return IIndexDocument
+	 */
+	public function setMore(array $more): IIndexDocument;
+
+	/**
+	 * Get more information.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return array
+	 */
+	public function getMore(): array;
+
+
+	/**
+	 * Add some excerpt of the content of the original document, usually based
+	 * on the search request.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @param string $source
+	 * @param string $excerpt
+	 *
+	 * @return IIndexDocument
+	 */
+	public function addExcerpt(string $source, string $excerpt): IIndexDocument;
+
+	/**
+	 * Set all excerpts of the content of the original document.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @param array $excerpts
+	 *
+	 * @return IIndexDocument
+	 */
+	public function setExcerpts(array $excerpts): IIndexDocument;
+
+	/**
+	 * Get all excerpts of the content of the original document.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return array
+	 */
+	public function getExcerpts(): array;
+
+
+	/**
+	 * Set the score to the result assigned to this document during a search
+	 * request.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $score
+	 *
+	 * @return IIndexDocument
+	 */
+	public function setScore(string $score): IIndexDocument;
+
+	/**
+	 * Get the score.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return string
+	 */
+	public function getScore(): string;
+
+
+	/**
+	 * Set some information about the original document that will be available
+	 * to the front-end when displaying search result. (as string)
+	 * Because this information will not be indexed, this method can also be
+	 * used to manage some data while filling the IIndexDocument before its
+	 * indexing.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $info
+	 * @param string $value
+	 *
+	 * @return IIndexDocument
+	 */
+	public function setInfo(string $info, string $value): IIndexDocument;
+
+	/**
+	 * Get an information about a document. (string)
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $info
+	 * @param string $default
+	 *
+	 * @return string
+	 */
+	public function getInfo(string $info, string $default = ''): string;
+
+	/**
+	 * Set some information about the original document that will be available
+	 * to the front-end when displaying search result. (as array)
+	 * Because this information will not be indexed, this method can also be
+	 * used to manage some data while filling the IIndexDocument before its
+	 * indexing.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $info
+	 * @param array $value
+	 *
+	 * @return IIndexDocument
+	 */
+	public function setInfoArray(string $info, array $value): IIndexDocument;
+
+	/**
+	 * Get an information about a document. (array)
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $info
+	 * @param array $default
+	 *
+	 * @return array
+	 */
+	public function getInfoArray(string $info, array $default = []): array;
+
+	/**
+	 * Set some information about the original document that will be available
+	 * to the front-end when displaying search result. (as int)
+	 * Because this information will not be indexed, this method can also be
+	 * used to manage some data while filling the IIndexDocument before its
+	 * indexing.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $info
+	 * @param int $value
+	 *
+	 * @return IIndexDocument
+	 */
+	public function setInfoInt(string $info, int $value): IIndexDocument;
+
+	/**
+	 * Get an information about a document. (int)
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $info
+	 * @param int $default
+	 *
+	 * @return int
+	 */
+	public function getInfoInt(string $info, int $default = 0): int;
+
+	/**
+	 * Set some information about the original document that will be available
+	 * to the front-end when displaying search result. (as bool)
+	 * Because this information will not be indexed, this method can also be
+	 * used to manage some data while filling the IIndexDocument before its
+	 * indexing.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $info
+	 * @param bool $value
+	 *
+	 * @return IIndexDocument
+	 */
+	public function setInfoBool(string $info, bool $value): IIndexDocument;
+
+	/**
+	 * Get an information about a document. (bool)
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $info
+	 * @param bool $default
+	 *
+	 * @return bool
+	 */
+	public function getInfoBool(string $info, bool $default = false): bool;
+
+	/**
+	 * Get all info.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return array
+	 */
+	public function getInfoAll(): array;
+}
diff --git a/lib/public/FullTextSearch/Model/IIndexOptions.php b/lib/public/FullTextSearch/Model/IIndexOptions.php
new file mode 100644
index 00000000000..951da3b9a76
--- /dev/null
+++ b/lib/public/FullTextSearch/Model/IIndexOptions.php
@@ -0,0 +1,57 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * SPDX-FileCopyrightText: 2018 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OCP\FullTextSearch\Model;
+
+/**
+ * Interface IIndexOptions
+ *
+ * IndexOptions are created in FullTextSearch when an admin initiate an index
+ * from the command line:
+ *
+ * ./occ fulltextsearch:index "{\"option1\": \"value\", \"option2\": true}"
+ *
+ * @since 15.0.0
+ *
+ */
+interface IIndexOptions {
+	/**
+	 * Get the value (as a string) for an option.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $option
+	 * @param string $default
+	 *
+	 * @return string
+	 */
+	public function getOption(string $option, string $default = ''): string;
+
+	/**
+	 * Get the value (as an array) for an option.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $option
+	 * @param array $default
+	 *
+	 * @return array
+	 */
+	public function getOptionArray(string $option, array $default = []): array;
+
+	/**
+	 * Get the value (as an boolean) for an option.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $option
+	 * @param bool $default
+	 *
+	 * @return bool
+	 */
+	public function getOptionBool(string $option, bool $default): bool;
+}
diff --git a/lib/public/FullTextSearch/Model/IRunner.php b/lib/public/FullTextSearch/Model/IRunner.php
new file mode 100644
index 00000000000..3ea7de43dd7
--- /dev/null
+++ b/lib/public/FullTextSearch/Model/IRunner.php
@@ -0,0 +1,123 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * SPDX-FileCopyrightText: 2018 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OCP\FullTextSearch\Model;
+
+/**
+ * Interface IRunner
+ *
+ * The indexing process can be long and heavy, and because errors can
+ * be encountered the process is wrapped using this interface.
+ * It allows the any extension of FullTextSearch to communicate with the process.
+ *
+ * The IRunner is coming with some methods so the Search Platform can
+ * returns important information and errors to be displayed to the admin.
+ *
+ * @since 15.0.0
+ *
+ */
+interface IRunner {
+	/**
+	 * @since 15.0.0
+	 */
+	public const RESULT_TYPE_SUCCESS = 1;
+
+	/**
+	 * @since 15.0.0
+	 */
+	public const RESULT_TYPE_WARNING = 4;
+
+	/**
+	 * @since 15.0.0
+	 */
+	public const RESULT_TYPE_FAIL = 9;
+
+
+	/**
+	 * Info are displayed in the user interface when an admin execute the
+	 * ./occ fulltextsearch:index command.
+	 *
+	 * quick list of info that can be edited:
+	 *   'documentId', 'info', 'title', 'resultIndex', 'resultStatus',
+	 *   'content', 'documentCurrent', 'documentTotal', 'progressStatus',
+	 *   'errorCurrent', 'errorException', 'errorIndex'.
+	 *
+	 * List of all editable info can be find in the Command\Index.php of the
+	 * FullTextSearch app.
+	 * (look for a comment 'full list of info that can be edited')
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $info
+	 * @param string $value
+	 */
+	public function setInfo(string $info, string $value);
+
+
+	/**
+	 * This method should be used when editing multiple info to avoid too many
+	 * refresh of the interface.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param array $data
+	 */
+	public function setInfoArray(array $data);
+
+
+	/**
+	 * Method used to update the current Action when an index is running.
+	 *
+	 * This method should be used instead of manually update the 'action' using
+	 * setInfo()/setInfoArray() as it is also used to keep the process alive,
+	 * manage the input, and some statistics of the load of the process.
+	 *
+	 * $action is a string with no space
+	 * $force should be set to true if the action is heavy while being executed
+	 * multiple times
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $action
+	 * @param bool $force
+	 *
+	 * @return string
+	 * @throws \Exception
+	 */
+	public function updateAction(string $action = '', bool $force = false): string;
+
+
+	/**
+	 * Call this method in a Search Platform or Content Provider if there is an
+	 * issue while generating a document or while indexing the current document.
+	 * This is used to store and display errors in the UI during an index to help
+	 * admin to keep track of errors.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param IIndex $index
+	 * @param string $message
+	 * @param string $class
+	 * @param int $sev
+	 */
+	public function newIndexError(IIndex $index, string $message, string $class = '', int $sev = 3);
+
+
+	/**
+	 * Call this method only in a Search Platform after an index of a document.
+	 * This is used to store and display results (good or bad) in the UI during
+	 * an index to help admin to keep track of fail and successful indexes.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param IIndex $index
+	 * @param string $message
+	 * @param string $status
+	 * @param int $type
+	 */
+	public function newIndexResult(IIndex $index, string $message, string $status, int $type);
+}
diff --git a/lib/public/FullTextSearch/Model/ISearchOption.php b/lib/public/FullTextSearch/Model/ISearchOption.php
new file mode 100644
index 00000000000..50e2cb5010a
--- /dev/null
+++ b/lib/public/FullTextSearch/Model/ISearchOption.php
@@ -0,0 +1,143 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * SPDX-FileCopyrightText: 2019 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OCP\FullTextSearch\Model;
+
+/**
+ * @since 16.0.0
+ *
+ * Interface ISearchOption
+ *
+ */
+interface ISearchOption {
+	/**
+	 * @since 16.0.0
+	 */
+	public const CHECKBOX = 'checkbox';
+
+	/**
+	 * @since 16.0.0
+	 */
+	public const INPUT = 'input';
+
+	/**
+	 * @since 16.0.0
+	 */
+	public const INPUT_SMALL = 'small';
+
+
+	/**
+	 * Set the name/key of the option.
+	 * The string should only contains alphanumerical chars and underscore.
+	 * The key can be retrieve when using ISearchRequest::getOption
+	 *
+	 * @see ISearchRequest::getOption
+	 *
+	 * @since 16.0.0
+	 *
+	 * @param string $name
+	 *
+	 * @return ISearchOption
+	 */
+	public function setName(string $name): ISearchOption;
+
+	/**
+	 * Get the name/key of the option.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @return string
+	 */
+	public function getName(): string;
+
+
+	/**
+	 * Set the title/display name of the option.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @param string $title
+	 *
+	 * @return ISearchOption
+	 */
+	public function setTitle(string $title): ISearchOption;
+
+	/**
+	 * Get the title of the option.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @return string
+	 */
+	public function getTitle(): string;
+
+
+	/**
+	 * Set the type of the option.
+	 * $type can be ISearchOption::CHECKBOX or ISearchOption::INPUT
+	 *
+	 * @since 16.0.0
+	 *
+	 * @param string $type
+	 *
+	 * @return ISearchOption
+	 */
+	public function setType(string $type): ISearchOption;
+
+	/**
+	 * Get the type of the option.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @return string
+	 */
+	public function getType(): string;
+
+
+	/**
+	 * In case of Type is INPUT, set the size of the input field.
+	 * Value can be ISearchOption::INPUT_SMALL or not defined.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @param string $size
+	 *
+	 * @return ISearchOption
+	 */
+	public function setSize(string $size): ISearchOption;
+
+	/**
+	 * Get the size of the INPUT.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @return string
+	 */
+	public function getSize(): string;
+
+
+	/**
+	 * In case of Type is , set the placeholder to be displayed in the input
+	 * field.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @param string $placeholder
+	 *
+	 * @return ISearchOption
+	 */
+	public function setPlaceholder(string $placeholder): ISearchOption;
+
+	/**
+	 * Get the placeholder.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @return string
+	 */
+	public function getPlaceholder(): string;
+}
diff --git a/lib/public/FullTextSearch/Model/ISearchRequest.php b/lib/public/FullTextSearch/Model/ISearchRequest.php
new file mode 100644
index 00000000000..9dc9613c407
--- /dev/null
+++ b/lib/public/FullTextSearch/Model/ISearchRequest.php
@@ -0,0 +1,339 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * SPDX-FileCopyrightText: 2018 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OCP\FullTextSearch\Model;
+
+/**
+ * Interface ISearchRequest
+ *
+ * When a search request is initiated, from a request from the front-end or using
+ * the IFullTextSearchManager::search() method, FullTextSearch will create a
+ * SearchRequest object, based on this interface.
+ *
+ * The object will be passed to the targeted Content Provider so it can convert
+ * search options using available method.
+ *
+ * The object is then encapsulated in a SearchResult and send to the
+ * Search Platform.
+ *
+ * @since 15.0.0
+ *
+ *
+ */
+interface ISearchRequest {
+	/**
+	 * Get the maximum number of results to be returns by the Search Platform.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return int
+	 */
+	public function getSize(): int;
+
+
+	/**
+	 * Get the current page.
+	 * Used by pagination.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return int
+	 */
+	public function getPage(): int;
+
+
+	/**
+	 * Get the author of the request.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return string
+	 */
+	public function getAuthor(): string;
+
+	/**
+	 * Get the searched string.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return string
+	 */
+	public function getSearch(): string;
+
+	/**
+	 * Set the searched string.
+	 *
+	 * @param string $search
+	 *
+	 * @since 17.0.0
+	 *
+	 * @return ISearchRequest
+	 */
+	public function setSearch(string $search): ISearchRequest;
+
+	/**
+	 * Extends the searched string.
+	 *
+	 * @since 17.0.0
+	 *
+	 * @param string $search
+	 *
+	 * @return ISearchRequest
+	 */
+	public function addSearch(string $search): ISearchRequest;
+
+
+	/**
+	 * Get the value of an option (as string).
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $option
+	 * @param string $default
+	 *
+	 * @return string
+	 */
+	public function getOption(string $option, string $default = ''): string;
+
+	/**
+	 * Get the value of an option (as array).
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $option
+	 * @param array $default
+	 *
+	 * @return array
+	 */
+	public function getOptionArray(string $option, array $default = []): array;
+
+
+	/**
+	 * Limit the search to a part of the document.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $part
+	 *
+	 * @return ISearchRequest
+	 */
+	public function addPart(string $part): ISearchRequest;
+
+	/**
+	 * Limit the search to an array of parts of the document.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param array $parts
+	 *
+	 * @return ISearchRequest
+	 */
+	public function setParts(array $parts): ISearchRequest;
+
+	/**
+	 * Get the parts the search is limited to.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return array
+	 */
+	public function getParts(): array;
+
+
+	/**
+	 * Limit the search to a specific meta tag.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $tag
+	 *
+	 * @return ISearchRequest
+	 */
+	public function addMetaTag(string $tag): ISearchRequest;
+
+	/**
+	 * Get the meta tags the search is limited to.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return array
+	 */
+	public function getMetaTags(): array;
+
+	/**
+	 * Limit the search to an array of meta tags.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param array $tags
+	 *
+	 * @return ISearchRequest
+	 */
+	public function setMetaTags(array $tags): ISearchRequest;
+
+
+	/**
+	 * Limit the search to a specific sub tag.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $source
+	 * @param string $tag
+	 *
+	 * @return ISearchRequest
+	 */
+	public function addSubTag(string $source, string $tag): ISearchRequest;
+
+	/**
+	 * Get the sub tags the search is limited to.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param bool $formatted
+	 *
+	 * @return array
+	 */
+	public function getSubTags(bool $formatted): array;
+
+	/**
+	 * Limit the search to an array of sub tags.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param array $tags
+	 *
+	 * @return ISearchRequest
+	 */
+	public function setSubTags(array $tags): ISearchRequest;
+
+
+	/**
+	 * Limit the search to a specific field of the mapping, using a full string.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $field
+	 *
+	 * @return ISearchRequest
+	 */
+	public function addLimitField(string $field): ISearchRequest;
+
+	/**
+	 * Get the fields the search is limited to.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return array
+	 */
+	public function getLimitFields(): array;
+
+
+	/**
+	 * Limit the search to a specific field of the mapping, using a wildcard on
+	 * the search string.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $field
+	 *
+	 * @return ISearchRequest
+	 */
+	public function addWildcardField(string $field): ISearchRequest;
+
+	/**
+	 * Get the limit to field of the mapping.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return array
+	 */
+	public function getWildcardFields(): array;
+
+
+	/**
+	 * Filter the results, based on a group of field, using regex
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param array $filters
+	 *
+	 * @return ISearchRequest
+	 */
+	public function addRegexFilters(array $filters): ISearchRequest;
+
+	/**
+	 * Get the regex filters the search is limit to.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return array
+	 */
+	public function getRegexFilters(): array;
+
+
+	/**
+	 * Filter the results, based on a group of field, using wildcard
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param array $filter
+	 *
+	 * @return ISearchRequest
+	 */
+	public function addWildcardFilter(array $filter): ISearchRequest;
+
+	/**
+	 * Get the wildcard filters the search is limit to.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return array
+	 */
+	public function getWildcardFilters(): array;
+
+
+	/**
+	 * Add an extra field to the search.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $field
+	 *
+	 * @return ISearchRequest
+	 */
+	public function addField(string $field): ISearchRequest;
+
+	/**
+	 * Get the list of extra field to search into.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return array
+	 */
+	public function getFields(): array;
+
+
+
+	/**
+	 * Add a MUST search on an extra field
+	 *
+	 * @param ISearchRequestSimpleQuery $query
+	 *
+	 * @return ISearchRequest
+	 * @since 17.0.0
+	 */
+	public function addSimpleQuery(ISearchRequestSimpleQuery $query): ISearchRequest;
+
+
+	/**
+	 * Get the list of queries on extra field.
+	 *
+	 * @return ISearchRequestSimpleQuery[]
+	 * @since 17.0.0
+	 */
+	public function getSimpleQueries(): array;
+}
diff --git a/lib/public/FullTextSearch/Model/ISearchRequestSimpleQuery.php b/lib/public/FullTextSearch/Model/ISearchRequestSimpleQuery.php
new file mode 100644
index 00000000000..3a6217398b6
--- /dev/null
+++ b/lib/public/FullTextSearch/Model/ISearchRequestSimpleQuery.php
@@ -0,0 +1,153 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * SPDX-FileCopyrightText: 2019 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OCP\FullTextSearch\Model;
+
+/**
+ * Interface ISearchRequestSimpleQuery
+ *
+ * Add a Query during a Search Request...
+ * - on a specific field,
+ * - using a specific value,
+ * - with a specific comparison
+ *
+ * @since 17.0.0
+ *
+ */
+interface ISearchRequestSimpleQuery {
+	/**
+	 * @since 17.0.0
+	 */
+	public const COMPARE_TYPE_TEXT = 1;
+
+	/**
+	 * @since 17.0.0
+	 */
+	public const COMPARE_TYPE_KEYWORD = 2;
+
+	/**
+	 * @since 17.0.0
+	 */
+	public const COMPARE_TYPE_INT_EQ = 3;
+
+	/**
+	 * @since 17.0.0
+	 */
+	public const COMPARE_TYPE_INT_GTE = 4;
+
+	/**
+	 * @since 17.0.0
+	 */
+	public const COMPARE_TYPE_INT_GT = 5;
+
+	/**
+	 * @since 17.0.0
+	 */
+	public const COMPARE_TYPE_INT_LTE = 6;
+
+	/**
+	 * @since 17.0.0
+	 */
+	public const COMPARE_TYPE_INT_LT = 7;
+
+	/**
+	 * @since 17.0.0
+	 */
+	public const COMPARE_TYPE_BOOL = 8;
+
+	/**
+	 * @since 17.0.0
+	 */
+	public const COMPARE_TYPE_ARRAY = 9;
+
+	/**
+	 * @since 17.0.0
+	 */
+	public const COMPARE_TYPE_REGEX = 10;
+
+	/**
+	 * @since 17.0.0
+	 */
+	public const COMPARE_TYPE_WILDCARD = 11;
+
+
+	/**
+	 * Get the compare type of the query
+	 *
+	 * @return int
+	 * @since 17.0.0
+	 */
+	public function getType(): int;
+
+
+	/**
+	 * Get the field to apply query
+	 *
+	 * @return string
+	 * @since 17.0.0
+	 */
+	public function getField(): string;
+
+	/**
+	 * Set the field to apply query
+	 *
+	 * @param string $field
+	 *
+	 * @return ISearchRequestSimpleQuery
+	 * @since 17.0.0
+	 */
+	public function setField(string $field): ISearchRequestSimpleQuery;
+
+
+	/**
+	 * Get the all values to compare
+	 *
+	 * @return array
+	 * @since 17.0.0
+	 */
+	public function getValues(): array;
+
+	/**
+	 * Add value to compare (string)
+	 *
+	 * @param string $value
+	 *
+	 * @return ISearchRequestSimpleQuery
+	 * @since 17.0.0
+	 */
+	public function addValue(string $value): ISearchRequestSimpleQuery;
+
+	/**
+	 * Add value to compare (int)
+	 *
+	 * @param int $value
+	 *
+	 * @return ISearchRequestSimpleQuery
+	 * @since 17.0.0
+	 */
+	public function addValueInt(int $value): ISearchRequestSimpleQuery;
+
+	/**
+	 * Add value to compare (array)
+	 *
+	 * @param array $value
+	 *
+	 * @return ISearchRequestSimpleQuery
+	 * @since 17.0.0
+	 */
+	public function addValueArray(array $value): ISearchRequestSimpleQuery;
+
+	/**
+	 * Add value to compare (bool)
+	 *
+	 * @param bool $value
+	 *
+	 * @return ISearchRequestSimpleQuery
+	 * @since 17.0.0
+	 */
+	public function addValueBool(bool $value): ISearchRequestSimpleQuery;
+}
diff --git a/lib/public/FullTextSearch/Model/ISearchResult.php b/lib/public/FullTextSearch/Model/ISearchResult.php
new file mode 100644
index 00000000000..cf902835a4c
--- /dev/null
+++ b/lib/public/FullTextSearch/Model/ISearchResult.php
@@ -0,0 +1,168 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * SPDX-FileCopyrightText: 2018 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OCP\FullTextSearch\Model;
+
+use OCP\FullTextSearch\IFullTextSearchProvider;
+
+/**
+ * Interface ISearchResult
+ *
+ * When a search request is initiated, FullTextSearch will create a SearchResult
+ * object, based on this interface, containing the SearchRequest and the targeted
+ * Content Provider.
+ *
+ * The object will be passed to the Search Platform, which will proceed to the
+ * search and fill the SearchResult object with results.
+ *
+ * Then, the object will be passed to the targeted Content Provider that will
+ * improve the Search Results with detailed information.
+ *
+ * Finally, the SearchResult is returned to the original search request.
+ *
+ * @since 15.0.0
+ *
+ */
+interface ISearchResult {
+	/**
+	 * Get the original SearchRequest.
+	 *
+	 * @see ISearchRequest
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return ISearchRequest
+	 */
+	public function getRequest(): ISearchRequest;
+
+	/**
+	 * Get the targeted Content Provider.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return IFullTextSearchProvider
+	 */
+	public function getProvider(): IFullTextSearchProvider;
+
+
+	/**
+	 * Add an IIndexDocument as one of the result of the search request.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param IIndexDocument $document
+	 *
+	 * @return ISearchResult
+	 */
+	public function addDocument(IIndexDocument $document): ISearchResult;
+
+	/**
+	 * Returns all result of the search request, in an array of IIndexDocument.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @return IIndexDocument[]
+	 */
+	public function getDocuments(): array;
+
+	/**
+	 * Set an array of IIndexDocument as the result of the search request.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param IIndexDocument[] $documents
+	 *
+	 * @return ISearchResult
+	 */
+	public function setDocuments(array $documents): ISearchResult;
+
+
+	/**
+	 * Add an aggregation to the result.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $category
+	 * @param string $value
+	 * @param int $count
+	 *
+	 * @return ISearchResult
+	 */
+	public function addAggregation(string $category, string $value, int $count): ISearchResult;
+
+	/**
+	 * Get all aggregations.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $category
+	 *
+	 * @return array
+	 */
+	public function getAggregations(string $category): array;
+
+
+	/**
+	 * Set the raw result of the request.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param string $result
+	 *
+	 * @return ISearchResult
+	 */
+	public function setRawResult(string $result): ISearchResult;
+
+
+	/**
+	 * Set the total number of results for the search request.
+	 * Used by pagination.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param int $total
+	 *
+	 * @return ISearchResult
+	 */
+	public function setTotal(int $total): ISearchResult;
+
+
+	/**
+	 * Set the top score for the search request.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param int $score
+	 *
+	 * @return ISearchResult
+	 */
+	public function setMaxScore(int $score): ISearchResult;
+
+
+	/**
+	 * Set the time spent by the request to perform the search.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param int $time
+	 *
+	 * @return ISearchResult
+	 */
+	public function setTime(int $time): ISearchResult;
+
+
+	/**
+	 * Set to true if the request timed out.
+	 *
+	 * @since 15.0.0
+	 *
+	 * @param bool $timedOut
+	 *
+	 * @return ISearchResult
+	 */
+	public function setTimedOut(bool $timedOut): ISearchResult;
+}
diff --git a/lib/public/FullTextSearch/Model/ISearchTemplate.php b/lib/public/FullTextSearch/Model/ISearchTemplate.php
new file mode 100644
index 00000000000..89f683ca013
--- /dev/null
+++ b/lib/public/FullTextSearch/Model/ISearchTemplate.php
@@ -0,0 +1,149 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * SPDX-FileCopyrightText: 2019 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OCP\FullTextSearch\Model;
+
+use OCP\FullTextSearch\IFullTextSearchProvider;
+
+/**
+ * Class ISearchTemplate
+ *
+ * This is a data transfer object that should be created by Content Provider
+ * when the getSearchTemplate() method is called.
+ *
+ * The object will contain templates to be displayed, and the list of the different
+ * options to be available to the user when they start a new search.
+ *
+ * The display of the Options is generated by the FullTextSearch app and Options
+ * can be displayed in 2 places:
+ *
+ * - the navigation page of the app that generate the indexed content.
+ *   (files, bookmarks, deck, mails, ...)
+ * - the navigation page of the FullTextSearch app.
+ *
+ * Both pages will have different Options, and only the first one can integrate
+ * a specific template.
+ *
+ * @see IFullTextSearchProvider::getSearchTemplate
+ *
+ * @since 16.0.0
+ *
+ */
+interface ISearchTemplate {
+	/**
+	 * Set the class of the icon to be displayed in the left panel of the
+	 * FullTextSearch navigation page, in front of the related Content Provider.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @param string $class
+	 *
+	 * @return ISearchTemplate
+	 */
+	public function setIcon(string $class): ISearchTemplate;
+
+	/**
+	 * Get the class of the icon.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @return string
+	 */
+	public function getIcon(): string;
+
+
+	/**
+	 * Set the path of a CSS file that will be loaded when needed.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @param string $css
+	 *
+	 * @return ISearchTemplate
+	 */
+	public function setCss(string $css): ISearchTemplate;
+
+	/**
+	 * Get the path of the CSS file.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @return string
+	 */
+	public function getCss(): string;
+
+
+	/**
+	 * Set the path of the file of a template that the HTML will be displayed
+	 * below the Options.
+	 * This should only be used if your Content Provider needs to set options in
+	 * a way not generated by FullTextSearch
+	 *
+	 * @since 16.0.0
+	 *
+	 * @param string $template
+	 *
+	 * @return ISearchTemplate
+	 */
+	public function setTemplate(string $template): ISearchTemplate;
+
+	/**
+	 * Get the path of the template file.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @return string
+	 */
+	public function getTemplate(): string;
+
+
+	/**
+	 * Add an option in the Panel that is displayed when the user start a search
+	 * within the app that generate the content.
+	 *
+	 * @see ISearchOption
+	 *
+	 * @since 16.0.0
+	 *
+	 * @param ISearchOption $option
+	 *
+	 * @return ISearchTemplate
+	 */
+	public function addPanelOption(ISearchOption $option): ISearchTemplate;
+
+	/**
+	 * Get all options to be displayed in the Panel.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @return ISearchOption[]
+	 */
+	public function getPanelOptions(): array;
+
+
+	/**
+	 * Add an option in the left panel of the FullTextSearch navigation page.
+	 *
+	 * @see ISearchOption
+	 *
+	 * @since 16.0.0
+	 *
+	 * @param ISearchOption $option
+	 *
+	 * @return ISearchTemplate
+	 */
+	public function addNavigationOption(ISearchOption $option): ISearchTemplate;
+
+	/**
+	 * Get all options to be displayed in the FullTextSearch navigation page.
+	 *
+	 * @since 16.0.0
+	 *
+	 * @return array
+	 */
+	public function getNavigationOptions(): array;
+}