* 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).

* go build / format tools
* re-format imports

* Fix bug on admin subcommand

* Add signals for all initDB

Co-authored-by: Lauris BH <lauris@nix.lv>

* Rename db Engines related functions

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

* Move db related basic functions to models/db

* Fix lint

* Fix lint

* Fix test

* Fix lint

* Fix lint

* revert unnecessary change

* Fix test

* Fix wrong replace string

* Use *Context

* Correct committer spelling and fix wrong replaced words

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

* Fix storage Iterate bug and Add storage doctor to delete garbage attachments

* Close object when used

* Refactor Logger

Refactor Logger to make a logger interface and make it possible to
wrap loggers for specific purposes.

* Refactor Doctor

    Move the gitea doctor functions into its own module.
    Use a logger for its messages instead of returning a results string[]

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

* Update modules/doctor/misc.go

Co-authored-by: 6543 <6543@obermui.de>

* Update modules/doctor/misc.go

Co-authored-by: 6543 <6543@obermui.de>

Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>

Provides new command: `gitea doctor recreate-table` which will recreate
db tables and copy the old data in to the new table.

This function can be used to remove the old warning of struct defaults being
out of date.

Fix #8868
Fix #3265
Fix #8894

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

* Initial support for push options

Signed-off-by: jolheiser <john.olheiser@gmail.com>

* Fix misspelling 🤦

Signed-off-by: jolheiser <john.olheiser@gmail.com>

* Fix formatting after conflict resolution

* defer close git repo

* According the GitLab documentation, git >= 2.10

Signed-off-by: jolheiser <john.olheiser@gmail.com>

* Words are hard. Thanks @mrsdizzie :sweat_smile:

Co-authored-by: mrsdizzie <info@mrsdizzie.com>

* Only update if there are push options

Signed-off-by: jolheiser <john.olheiser@gmail.com>

Co-authored-by: mrsdizzie <info@mrsdizzie.com>

Replace all calls to os.Remove/os.RemoveAll by retrying util.Remove/util.RemoveAll and remove circular dependencies from util.

Fix #12339

Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: silverwind <me@silverwind.io>

* Decrease the  num_stars when deleting a repo

fix #11949

Signed-off-by: a101211279 <1012112796@qq.com>

* Add migration

* use batch

* Apply suggestions from code review

Co-authored-by: Lauris BH <lauris@nix.lv>

* fix lint

* fix lint

* fix ci

* fix ci2

* add doctor

* duplicate code

* fix migration

* fix some nits

* add start

Co-authored-by: Lauris BH <lauris@nix.lv>
Co-authored-by: zeripath <art27@cantab.net>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

* Add migration to set IsArchived false if it is null

Fix #11824

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

* Add doctor

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

Co-authored-by: techknowlogick <techknowlogick@gitea.io>

needed to fix issue as described in #10280

* rename check-db to check-db-version
* add check-db-consistency:
* find issues without existing repository
* find pulls without existing issues
* find tracked times without existing issues/pulls
* find labels without repository or org reference

Co-authored-by: guillep2k <18600385+guillep2k@users.noreply.github.com>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

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

Co-authored-by: techknowlogick <techknowlogick@gitea.io>

* Add `gitea doctor --list` flag to list the checks that will be run, including those by default
* Add `gitea doctor --run` to run specific checks
* Add `gitea doctor --all` to run all checks
* Add db version checker
* Add non-default recalculate merge bases check/fixer to doctor
* Add hook checker (Fix #9878) and ensure hooks are executable (Fix #6319)
* Fix authorized_keys checker - slight change of functionality here because parsing the command is fragile and we should just check if the authorized_keys file is essentially the same as what gitea would produce. (This is still not perfect as order matters - we should probably just md5sum the two files.)
* Add SCRIPT_TYPE check (Fix #10977)
* Add `gitea doctor --fix` to attempt to fix what is possible to easily fix
* Add `gitea doctor --log-file` to set the log-file, be it a file, stdout or to switch off completely. (Fixes previously undetected bug with certain xorm logging configurations - see @6543 comment.)

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

* Add doctor check of app.ini paths

* Make /custom dir not mandatory

* Fix message and improve interface

* Update cmd/doctor.go

Co-Authored-By: John Olheiser <42128690+jolheiser@users.noreply.github.com>

* Apaise lint

* Isn't the linter a sweet? (1)

* Isn't the linter a sweet? (2)

* Isn't the linter a sweet?? (3)

* Restart CI

Co-authored-by: John Olheiser <42128690+jolheiser@users.noreply.github.com>
Co-authored-by: zeripath <art27@cantab.net>

* add doctor

* Add a new command doctor to check if some wrong configurations on gitea instance

* fix import

* use regex match authorized_keys on doctor

* Add documentation