* Add API to get issue/pull comments and events (timeline)
Adds an API to get both comments and events in one endpoint with all required data.
Closes go-gitea/gitea#13250

* Fix swagger

* Don't show code comments (use review api instead)

* fmt

* Fix comment

* Time -> TrackedTime

* Use var directly

* Add logger

* Fix lint

* Fix test

* Add comments

* fmt

* [test] get issue directly by ID

* Update test

* Add description for changed refs

* Fix build issues + lint

* Fix build

* Use string enums

* Update swagger

* Support `page` and `limit` params

* fmt + swagger

* Use global slices

Co-authored-by: zeripath <art27@cantab.net>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

* Handle invalid issues

- When you hover over a issue reference, and the issue doesn't exist, it
will just hang on the loading animation.
- This patch fixes that by showing them the pop-up with a "Error
occured" message.

* Add I18N

* refactor

* fix comment for lint

* fix unit test for i18n

* fix unit test for i18n

* add comments

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

A consequence of forcibly setting the RoutePath to the escaped url is that the
auto routing to endpoints without terminal slashes fails (Causing #18060.) This
failure raises the possibility that forcibly setting the RoutePath causes other
unexpected behaviors too.

Therefore, instead we should simply pre-escape the URL in the process registering
handler. Then the request URL will be properly escaped for all the following calls.

Fix #17938
Fix #18060
Replace #18062
Replace #17997

Signed-off-by: Andrew Thornton <art27@cantab.net>

a custom name, intended to be used when there's a name conflict
- When a fork request results in a name conflict, HTTP 409: Conflict is
  returned instead of 500
- API documentation for the above mentioned changes

Signed-off-by: realaravinth <realaravinth@batsense.net>

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: zeripath <art27@cantab.net>

If http.Get() returns an error return nil and err before attempting to
use the broken file.

Thanks to walker xiong for spotting this bug.

Signed-off-by: Andrew Thornton <art27@cantab.net>

Git will and can pack references into packfiles and therefore if you write/read the
files directly you will get false results. Instead you should use update-ref and
show-ref. To that end I have created three new functions in git/repo_commit.go that
will do this correctly.

Related #17191

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Read patches to get history

Although #17487 ensured that the table was quoted in the join it missed that the
query part of the check also needed to be quoted.

Fix #17485

Signed-off-by: Andrew Thornton <art27@cantab.net>

There are repeated panics in tests due to TestRepository_GetTag failing
to run properly.  This happens when we attempt to reset the internal
repo for a tag which has failed to load. The problem is - the panic that
this is causing is preventing us from finding what the real error is.

This PR simply moves the failure out so we have a chance to see what
really is failing.

Signed-off-by: Andrew Thornton <art27@cantab.net>

Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

* Reset Session ID on login

When logging in the SessionID should be reset and the session cleaned up.

Signed-off-by: Andrew Thornton <art27@cantab.net>

* with new session.RegenerateID function

Signed-off-by: Andrew Thornton <art27@cantab.net>

* update go-chi/session

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Ensure that session id is changed after oauth data is set and between account linking pages too

Signed-off-by: Andrew Thornton <art27@cantab.net>

* placate lint

Signed-off-by: Andrew Thornton <art27@cantab.net>

* as per review

Signed-off-by: Andrew Thornton <art27@cantab.net>

Remove repeated type declarations in function definitions.

* Prevent off-by-one error on comments on newly appended lines

There was a bug in CutDiffAroundLine whereby if a file without a terminal new line
has a patch which appends lines to it and a comment is placed on one of those lines
the comment diff will be a line out of place.

This fixes CutDiffAroundLine to simply ignore the missing terminal newline - however,
we should really improve this rendering to add a marker to say that there was a
previously missing terminal newline.

Fix #17875

Signed-off-by: Andrew Thornton <art27@cantab.net>

Strangely a weird bug was present in the log escaping code whereby any escaped
character would gain 03d - this was due to a mistake in the format string where
it should have read %03o but read instead %o03d. This has led to spurious 03d
trailing characters on these escaped characters!

Signed-off-by: Andrew Thornton <art27@cantab.net>

The current TestPatch conflict code uses a plain git apply which does not properly
account for 3-way merging. However, we can improve things using `git read-tree -m` to
do a three-way merge then follow the algorithm used in merge-one-file. We can also use 
`--patience` and/or `--histogram` to generate a nicer diff for applying patches too.

Fix #13679
Fix #6417

Signed-off-by: Andrew Thornton <art27@cantab.net>

Adds a markdown header option `ref` that allows you to set the ref the issue should belong.

This PR contains multiple fixes. The most important of which is:

* Prevent hang in git cat-file if the repository is not a valid repository 
    
    Unfortunately it appears that if git cat-file is run in an invalid
    repository it will hang until stdin is closed. This will result in
    deadlocked /pulls pages and dangling git cat-file calls if a broken
    repository is tried to be reviewed or pulls exists for a broken
    repository.

    Fix #14734
    Fix #9271
    Fix #16113

Otherwise there are a few small other fixes included which this PR was initially intending to fix:

* Fix panic on partial compares due to missing PullRequestWorkInProgressPrefixes
* Fix links on pulls pages  due to regression from #17551 - by making most /issues routes match /pulls too - Fix #17983
* Fix links on feeds pages due to another regression from #17551 but also fix issue with syncing tags - Fix #17943
* Add missing locale entries for oauth group claims
* Prevent NPEs if ColorFormat is called on nil users, repos or teams.

There was an unfortunate regression in #14293 which has led to the double decoding
of url parameter elements if they contain a '%'. This is due to an issue
with the way chi decodes its RoutePath. In detail the problem lies in
mux.go where the routeHTTP path uses the URL.RawPath or even the
URL.Path instead of the escaped path to do routing.

This PR simply forcibly sets the routePath to that of the EscapedPath.

Fix #17938

Signed-off-by: Andrew Thornton <art27@cantab.net>

Save a bit of bandwidth by only requesting 3-times the rendered avatar
size. Factor 4 is only really beneficial on a handful of mobile phones
and I don't think they are the primary device we design for.

Configurability contributed by zeripath.

Fixes: https://github.com/go-gitea/gitea/pull/17422
Fixes: https://github.com/go-gitea/gitea/issues/16287

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

* Do not skip links.

* Restrict text in links to emojis.

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: zeripath <art27@cantab.net>

* Add missing `X-Total-Count` and fix some related bugs

Adds `X-Total-Count` header to APIs that return a list but doesn't have it yet.
Fixed bugs:
* not returned after reporting error (39eb82446c/routers/api/v1/user/star.go (L70))
* crash with index out of bounds, API issue/issueSubscriptions

I also found various endpoints that return lists but do not apply/support pagination yet:
```
/repos/{owner}/{repo}/issues/{index}/labels
/repos/{owner}/{repo}/issues/comments/{id}/reactions
/repos/{owner}/{repo}/branch_protections
/repos/{owner}/{repo}/contents
/repos/{owner}/{repo}/hooks/git
/repos/{owner}/{repo}/issue_templates
/repos/{owner}/{repo}/releases/{id}/assets
/repos/{owner}/{repo}/reviewers
/repos/{owner}/{repo}/teams
/user/emails
/users/{username}/heatmap
```
If this is not expected, an new issue should be opened.

Closes #13043

* fmt

* Update routers/api/v1/repo/issue_subscription.go

Co-authored-by: KN4CK3R <admin@oldschoolhack.me>

* Use FindAndCount

Co-authored-by: KN4CK3R <admin@oldschoolhack.me>
Co-authored-by: 6543 <6543@obermui.de>

* Add setting to OAuth handlers to override local 2FA settings

This PR adds a setting to OAuth and OpenID login sources to allow the source to
override local 2FA requirements.

Fix #13939

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Fix regression from #16544

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Add scopes settings

Signed-off-by: Andrew Thornton <art27@cantab.net>

* fix trace logging in auth_openid

Signed-off-by: Andrew Thornton <art27@cantab.net>

* add required claim options

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Move UpdateExternalUser to externalaccount

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Allow OAuth2/OIDC to set Admin/Restricted status

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Allow use of the same group claim name for the prohibit login value

Signed-off-by: Andrew Thornton <art27@cantab.net>

* fixup! Move UpdateExternalUser to externalaccount

* as per wxiaoguang

Signed-off-by: Andrew Thornton <art27@cantab.net>

* add label back in

Signed-off-by: Andrew Thornton <art27@cantab.net>

* adjust localisation

Signed-off-by: Andrew Thornton <art27@cantab.net>

* placate lint

Signed-off-by: Andrew Thornton <art27@cantab.net>

Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>

* Improbe behaviour of fork button

* Apply suggestions from code review

* Remove old lines

* Apply suggestions

* Fix test

* Remove unnecessary or

* Update templates/repo/header.tmpl

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

* Add comment

* Fix situation if you can't fork but don't have forks

* Fix lint

* Apply changes from #17783

* fmt

* fmt

* Apply tweaks

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

* Rm dupl css

* Fix build

Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

* some repository refactors

* remove unnecessary code

* Fix test

* Remove unnecessary banner

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: zeripath <art27@cantab.net>

* Move keys to models/keys

* Rename models/keys -> models/asymkey

* change the missed package name

* Fix package alias

* Fix test

* Fix docs

* Fix test

* Fix test

* merge

* Some refactors related repository model

* Move more methods out of repository

* Move repository into models/repo

* Fix test

* Fix test

* some improvements

* Remove unnecessary function

* Fix a panic in NotifyCreateIssueComment (caused by string truncation)

* more unit tests

* refactor

* fix some edge cases

* use SplitStringAtByteN for comment content

The current implementation of checkBranchName is highly inefficient
involving opening the repository, the listing all of the branch names
checking them individually before then using using opened repo to get
the tags.

This PR avoids this by simply walking the references from show-ref
instead of opening the repository (in the nogogit case).

Signed-off-by: Andrew Thornton <art27@cantab.net>

* allways set a message-id on mails
* Add unit tests for mailer & Message-ID

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

* Refactor install page (db type)

* set correct default DB HOST for different DB TYPE
* remove legacy TiDB from documents
* unify the usage of DB TYPE, in code we only use "mysql". "MySQL" is only shown to users for friendly name.

* Gitea can use TiDB via MySQL protocol

Co-authored-by: zeripath <art27@cantab.net>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

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

This PR adds [Codebase](https://www.codebasehq.com/) as migration source.

Supported:
- Milestones
- Issues
- Pull Requests
- Comments
- Labels

Fixes #16478

Co-authored-by: Gusted <williamzijl7@hotmail.com>

Co-authored-by: Gusted <williamzijl7@hotmail.com>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

* Improve install code to avoid low-level mistakes.

If a user tries to do a re-install in a Gitea database, they gets a warning and double check.
When Gitea runs, it never create empty app.ini automatically.

Also some small (related) refactoring:

* Refactor db.InitEngine related logic make it more clean (especially for the install code)
* Move some i18n strings out from setting.go to make the setting.go can be easily maintained.
* Show errors in CLI code if an incorrect app.ini is used.
* APP_DATA_PATH is created when installing, and checked when starting (no empty directory is created any more).

This PR registers requests with the process manager and manages hierarchy within the processes.

Git repos are then associated with a context, (usually the request's context) - with sub commands using this context as their base context.

Signed-off-by: Andrew Thornton <art27@cantab.net>

This PR adds another option to app.ini make co-committed-by and co-authored-by trailers
optional on a per server basis.

Fix #17194

Signed-off-by: Andrew Thornton <art27@cantab.net>

Make relative unix sockets absolute by making them absolute against the AppWorkPath

Fix #17833

## :warning: BREAKING :warning: 

Prior to this PR relative unix sockets would have been asserted to be relative to the current working directory that gitea, gitea serv, hook and manager etc were running in. Hooks and Serv would have failed to work properly under this situation so we expect that although this is a technically breaking change the previous situation was already broken.

Signed-off-by: Andrew Thornton <art27@cantab.net>

MIME types can have multiple optional parameters, eg:
    video/webm; codecs="w/e codec"; charset="binary"
This commit replaces the usage of regex for getting the "type/subtype"
with mime.ParseMediaType.

- Use the provided `doer` instead of `rel.Publisher`. The code will also
run on edited releases and deleted ones, which isn't necessary done by
`rel.Publisher`.

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

* Move user related model into models/user

* Fix lint for windows

* Fix windows lint

* Fix windows lint

* Move some tests in models

* Merge