Allow multiple files in generic packages (#20661)

* Allow multiple files in generic packages.
* Add deletion of a single file.
* Update docs.
* Change version check.

Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

1 files changed, 70 insertions, 5 deletions

diff --git a/docs/content/doc/packages/generic.en-us.md b/docs/content/doc/packages/generic.en-us.md
index a82058da8a..dd0f5653ff 100644
--- a/docs/content/doc/packages/generic.en-us.md
+++ b/docs/content/doc/packages/generic.en-us.md
@@ -27,7 +27,7 @@ To authenticate to the Package Registry, you need to provide [custom HTTP header
 ## Publish a package
 
 To publish a generic package perform a HTTP PUT operation with the package content in the request body.
-You cannot publish a package if a package of the same name and version already exists. You must delete the existing package first.
+You cannot publish a file with the same name twice to a package. You must delete the existing package version first.
 
 ```
 PUT https://gitea.example.com/api/packages/{owner}/generic/{package_name}/{package_version}/{file_name}
@@ -36,9 +36,9 @@ PUT https://gitea.example.com/api/packages/{owner}/generic/{package_name}/{packa
 | Parameter         | Description |
 | ----------------- | ----------- |
 | `owner`           | The owner of the package. |
-| `package_name`    | The package name. It can contain only lowercase letters (`a-z`), uppercase letter (`A-Z`), numbers (`0-9`), dots (`.`), hyphens (`-`), or underscores (`_`). |
-| `package_version` | The package version, a non-empty string. |
-| `file_name`       | The filename. It can contain only lowercase letters (`a-z`), uppercase letter (`A-Z`), numbers (`0-9`), dots (`.`), hyphens (`-`), or underscores (`_`). |
+| `package_name`    | The package name. It can contain only lowercase letters (`a-z`), uppercase letter (`A-Z`), numbers (`0-9`), dots (`.`), hyphens (`-`), pluses (`+`), or underscores (`_`). |
+| `package_version` | The package version, a non-empty string without trailing or leading whitespaces. |
+| `file_name`       | The filename. It can contain only lowercase letters (`a-z`), uppercase letter (`A-Z`), numbers (`0-9`), dots (`.`), hyphens (`-`), pluses (`+`), or underscores (`_`). |
 
 Example request using HTTP Basic authentication:
 
@@ -55,7 +55,8 @@ The server reponds with the following HTTP Status codes.
 | HTTP Status Code  | Meaning |
 | ----------------- | ------- |
 | `201 Created`     | The package has been published. |
-| `400 Bad Request` | The package name and/or version are invalid or a package with the same name and version already exist. |
+| `400 Bad Request` | The package name and/or version and/or file name are invalid. |
+| `409 Conflict`    | A file with the same name exist already in the package. |
 
 ## Download a package
 
@@ -80,3 +81,67 @@ Example request using HTTP Basic authentication:
 curl --user your_username:your_token_or_password \
      https://gitea.example.com/api/packages/testuser/generic/test_package/1.0.0/file.bin
 ```
+
+The server reponds with the following HTTP Status codes.
+
+| HTTP Status Code  | Meaning |
+| ----------------- | ------- |
+| `200 OK`          | Success |
+| `404 Not Found`   | The package or file was not found. |
+
+## Delete a package
+
+To delete a generic package perform a HTTP DELETE operation. This will delete all files of this version.
+
+```
+DELETE https://gitea.example.com/api/packages/{owner}/generic/{package_name}/{package_version}
+```
+
+| Parameter         | Description |
+| ----------------- | ----------- |
+| `owner`           | The owner of the package. |
+| `package_name`    | The package name. |
+| `package_version` | The package version. |
+
+Example request using HTTP Basic authentication:
+
+```shell
+curl --user your_username:your_token_or_password -X DELETE \
+     https://gitea.example.com/api/packages/testuser/generic/test_package/1.0.0
+```
+
+The server reponds with the following HTTP Status codes.
+
+| HTTP Status Code  | Meaning |
+| ----------------- | ------- |
+| `204 No Content`  | Success |
+| `404 Not Found`   | The package was not found. |
+
+## Delete a package file
+
+To delete a file of a generic package perform a HTTP DELETE operation. This will delete the package version too if there is no file left.
+
+```
+DELETE https://gitea.example.com/api/packages/{owner}/generic/{package_name}/{package_version}/{filename}
+```
+
+| Parameter         | Description |
+| ----------------- | ----------- |
+| `owner`           | The owner of the package. |
+| `package_name`    | The package name. |
+| `package_version` | The package version. |
+| `filename`        | The filename. |
+
+Example request using HTTP Basic authentication:
+
+```shell
+curl --user your_username:your_token_or_password -X DELETE \
+     https://gitea.example.com/api/packages/testuser/generic/test_package/1.0.0/file.bin
+```
+
+The server reponds with the following HTTP Status codes.
+
+| HTTP Status Code  | Meaning |
+| ----------------- | ------- |
+| `204 No Content`  | Success |
+| `404 Not Found`   | The package or file was not found. |