1 files changed, 101 insertions, 9 deletions

diff --git a/modules/indexer/issues/internal/model.go b/modules/indexer/issues/internal/model.go
index 2b52d32302..31acd16bd4 100644
--- a/modules/indexer/issues/internal/model.go
+++ b/modules/indexer/issues/internal/model.go
@@ -3,17 +3,45 @@
 
 package internal
 
+import (
+	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/modules/timeutil"
+	"code.gitea.io/gitea/modules/util"
+)
+
 // IndexerData data stored in the issue indexer
 type IndexerData struct {
-	ID        int64    `json:"id"`
-	RepoID    int64    `json:"repo_id"`
-	State     string   `json:"state"` // open, closed, all
-	IssueType string   `json:"type"`  // issue or pull
-	Title     string   `json:"title"`
-	Content   string   `json:"content"`
-	Comments  []string `json:"comments"`
-	IsDelete  bool     `json:"is_delete"`
-	IDs       []int64  `json:"ids"`
+	ID       int64 `json:"id"`
+	RepoID   int64 `json:"repo_id"`
+	IsPublic bool  `json:"is_public"` // If the repo is public
+
+	// Fields used for keyword searching
+	Title    string   `json:"title"`
+	Content  string   `json:"content"`
+	Comments []string `json:"comments"`
+
+	// Fields used for filtering
+	IsPull             bool               `json:"is_pull"`
+	IsClosed           bool               `json:"is_closed"`
+	LabelIDs           []int64            `json:"label_ids"`
+	NoLabel            bool               `json:"no_label"` // True if LabelIDs is empty
+	MilestoneID        int64              `json:"milestone_id"`
+	ProjectID          int64              `json:"project_id"`
+	ProjectBoardID     int64              `json:"project_board_id"`
+	PosterID           int64              `json:"poster_id"`
+	AssigneeID         int64              `json:"assignee_id"`
+	MentionIDs         []int64            `json:"mention_ids"`
+	ReviewedIDs        []int64            `json:"reviewed_ids"`
+	ReviewRequestedIDs []int64            `json:"review_requested_ids"`
+	SubscriberIDs      []int64            `json:"subscriber_ids"`
+	UpdatedUnix        timeutil.TimeStamp `json:"updated_unix"`
+
+	// Fields used for sorting
+	// UpdatedUnix is both used for filtering and sorting.
+	// ID is used for sorting too, to make the sorting stable.
+	CreatedUnix  timeutil.TimeStamp `json:"created_unix"`
+	DeadlineUnix timeutil.TimeStamp `json:"deadline_unix"`
+	CommentCount int64              `json:"comment_count"`
 }
 
 // Match represents on search result
@@ -27,3 +55,67 @@ type SearchResult struct {
 	Total int64
 	Hits  []Match
 }
+
+// SearchOptions represents search options
+type SearchOptions struct {
+	Keyword string // keyword to search
+
+	RepoIDs   []int64 // repository IDs which the issues belong to
+	AllPublic bool    // if include all public repositories
+
+	IsPull   util.OptionalBool // if the issues is a pull request
+	IsClosed util.OptionalBool // if the issues is closed
+
+	IncludedLabelIDs    []int64 // labels the issues have
+	ExcludedLabelIDs    []int64 // labels the issues don't have
+	IncludedAnyLabelIDs []int64 // labels the issues have at least one. It will be ignored if IncludedLabelIDs is not empty. It's an uncommon filter, but it has been supported accidentally by issues.IssuesOptions.IncludedLabelNames.
+	NoLabelOnly         bool    // if the issues have no label, if true, IncludedLabelIDs and ExcludedLabelIDs, IncludedAnyLabelIDs will be ignored
+
+	MilestoneIDs []int64 // milestones the issues have
+
+	ProjectID      *int64 // project the issues belong to
+	ProjectBoardID *int64 // project board the issues belong to
+
+	PosterID *int64 // poster of the issues
+
+	AssigneeID *int64 // assignee of the issues, zero means no assignee
+
+	MentionID *int64 // mentioned user of the issues
+
+	ReviewedID        *int64 // reviewer of the issues
+	ReviewRequestedID *int64 // requested reviewer of the issues
+
+	SubscriberID *int64 // subscriber of the issues
+
+	UpdatedAfterUnix  *int64
+	UpdatedBeforeUnix *int64
+
+	db.Paginator
+
+	SortBy SortBy // sort by field
+}
+
+type SortBy string
+
+const (
+	SortByCreatedDesc  SortBy = "-created_unix"
+	SortByUpdatedDesc  SortBy = "-updated_unix"
+	SortByCommentsDesc SortBy = "-comment_count"
+	SortByDeadlineDesc SortBy = "-deadline_unix"
+	SortByCreatedAsc   SortBy = "created_unix"
+	SortByUpdatedAsc   SortBy = "updated_unix"
+	SortByCommentsAsc  SortBy = "comment_count"
+	SortByDeadlineAsc  SortBy = "deadline_unix"
+	// Unsupported sort types which are supported by issues.IssuesOptions.SortType:
+	//
+	//  - "priorityrepo":
+	//                    It's impossible to support it in the indexer.
+	//                    It is based on the specified repository in the request, so we cannot add static field to the indexer.
+	//                    If we do something like that query the issues in the specified repository first then append other issues,
+	//                    it will break the pagination.
+	//
+	// - "project-column-sorting":
+	//                    Although it's possible to support it by adding project.ProjectIssue.Sorting to the indexer,
+	//                    but what if the issue belongs to multiple projects?
+	//                    Since it's unsupported to search issues with keyword in project page, we don't need to support it.
+)