minio/sha256-simd provides additional acceleration for SHA256 using
AVX512, SHA Extensions for x86 and ARM64 for ARM.
It provides a drop-in replacement for crypto/sha256 and if the
extensions are not available it falls back to standard crypto/sha256.
---------
Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: John Olheiser <john.olheiser@gmail.com>
Change the mailer interface to prevent leaking of possible hidden email
addresses when sending to multiple recipients.
Co-authored-by: Gusted <williamzijl7@hotmail.com>
Addition to #22056
This PR adds a hint to mail text if replies are supported.
I can't tell if the text structure is supported in every language. Maybe
we need to put the whole line in the translation file and use
parameters.
closes#13585fixes#9067fixes#2386
ref #6226
ref #6219fixes#745
This PR adds support to process incoming emails to perform actions.
Currently I added handling of replies and unsubscribing from
issues/pulls. In contrast to #13585 the IMAP IDLE command is used
instead of polling which results (in my opinion 😉) in cleaner code.
Procedure:
- When sending an issue/pull reply email, a token is generated which is
present in the Reply-To and References header.
- IMAP IDLE waits until a new email arrives
- The token tells which action should be performed
A possible signature and/or reply gets stripped from the content.
I added a new service to the drone pipeline to test the receiving of
incoming mails. If we keep this in, we may test our outgoing emails too
in future.
Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Change all license headers to comply with REUSE specification.
Fix#16132
Co-authored-by: flynnnnnnnnnn <flynnnnnnnnnn@github>
Co-authored-by: John Olheiser <john.olheiser@gmail.com>
Unfortunately the fallback configuration code for [mailer] that were
added in #18982 are incorrect. When you read a value from an ini section
that key is added. This leads to a failure of the fallback mechanism.
Further there is also a spelling mistake in the startTLS configuration.
This PR restructures the mailer code to first map the deprecated
settings on to the new ones - and then use ini.MapTo to map those on to
the struct with additional validation as necessary.
Ref #21744
Signed-off-by: Andrew Thornton <art27@cantab.net>
This PR adds a context parameter to a bunch of methods. Some helper
`xxxCtx()` methods got replaced with the normal name now.
Co-authored-by: delvh <dev.lh@web.de>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
I found myself wondering whether a PR I scheduled for automerge was
actually merged. It was, but I didn't receive a mail notification for it
- that makes sense considering I am the doer and usually don't want to
receive such notifications. But ideally I want to receive a notification
when a PR was merged because I scheduled it for automerge.
This PR implements exactly that.
The implementation works, but I wonder if there's a way to avoid passing
the "This PR was automerged" state down so much. I tried solving this
via the database (checking if there's an automerge scheduled for this PR
when sending the notification) but that did not work reliably, probably
because sending the notification happens async and the entry might have
already been deleted. My implementation might be the most
straightforward but maybe not the most elegant.
Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: Lauris BH <lauris@nix.lv>
Co-authored-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
The recovery, API, Web and package frameworks all create their own HTML
Renderers. This increases the memory requirements of Gitea
unnecessarily with duplicate templates being kept in memory.
Further the reloading framework in dev mode for these involves locking
and recompiling all of the templates on each load. This will potentially
hide concurrency issues and it is inefficient.
This PR stores the templates renderer in the context and stores this
context in the NormalRoutes, it then creates a fsnotify.Watcher
framework to watch files.
The watching framework is then extended to the mailer templates which
were previously not being reloaded in dev.
Then the locales are simplified to a similar structure.
Fix#20210Fix#20211Fix#20217
Signed-off-by: Andrew Thornton <art27@cantab.net>
This bug affects tests which are sending emails (#20307). Some tests reinitialise the web routes (like `TestNodeinfo`) which messed up the mail templates. There is no reason why the templates should be loaded in the routes method.
* `PROTOCOL`: can be smtp, smtps, smtp+startls, smtp+unix, sendmail, dummy
* `SMTP_ADDR`: domain for SMTP, or path to unix socket
* `SMTP_PORT`: port for SMTP; defaults to 25 for `smtp`, 465 for `smtps`, and 587 for `smtp+startls`
* `ENABLE_HELO`, `HELO_HOSTNAME`: reverse `DISABLE_HELO` to `ENABLE_HELO`; default to false + system hostname
* `FORCE_TRUST_SERVER_CERT`: replace the unclear `SKIP_VERIFY`
* `CLIENT_CERT_FILE`, `CLIENT_KEY_FILE`, `USE_CLIENT_CERT`: clarify client certificates here
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Sometimes users want to receive email notifications of messages they create or reply to,
Added an option to personal preferences to allow users to choose
Closes#20149
* Refactor `i18n` to `locale`
- Currently we're using the `i18n` variable naming for the `locale`
struct. This contains locale's specific information and cannot be used
for general i18n purpose, therefore refactoring it to `locale` makes
more sense.
- Ref: https://github.com/go-gitea/gitea/pull/20096#discussion_r906699200
* Update routers/install/install.go
* Prototyping
* Start work on creating offsets
* Modify tests
* Start prototyping with actual MPH
* Twiddle around
* Twiddle around comments
* Convert templates
* Fix external languages
* Fix latest translation
* Fix some test
* Tidy up code
* Use simple map
* go mod tidy
* Move back to data structure
- Uses less memory by creating for each language a map.
* Apply suggestions from code review
Co-authored-by: delvh <dev.lh@web.de>
* Add some comments
* Fix tests
* Try to fix tests
* Use en-US as defacto fallback
* Use correct slices
* refactor (#4)
* Remove TryTr, add log for missing translation key
* Refactor i18n
- Separate dev and production locale stores.
- Allow for live-reloading in dev mode.
Co-authored-by: zeripath <art27@cantab.net>
* Fix live-reloading & check for errors
* Make linter happy
* live-reload with periodic check (#5)
* Fix tests
Co-authored-by: delvh <dev.lh@web.de>
Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: zeripath <art27@cantab.net>
* Move access and repo permission to models/perm/access
* fix test
* fix git test
* Move functions sequence
* Some improvements per @KN4CK3R and @delvh
* Move issues related code to models/issues
* Move some issues related sub package
* Merge
* Fix test
* Fix test
* Fix test
* Fix test
* Rename some files
* Move some repository related code into sub package
* Move more repository functions out of models
* Fix lint
* Some performance optimization for webhooks and others
* some refactors
* Fix lint
* Fix
* Update modules/repository/delete.go
Co-authored-by: delvh <dev.lh@web.de>
* Fix test
* Merge
* Fix test
* Fix test
* Fix test
* Fix test
Co-authored-by: delvh <dev.lh@web.de>
When Gitea is running as PID 1 git will occassionally orphan child processes leading
to (defunct) processes. This PR simply sets Setpgid to true on these child processes
meaning that these defunct processes will also be correctly reaped.
Fix#19077
Signed-off-by: Andrew Thornton <art27@cantab.net>
Unfortunately many email readers will (helpfully) detect url or url-like names and
automatically create links to them, even in HTML emails. This is not ideal when
usernames can have dots in them.
This PR tries to prevent this behaviour by sticking ZWJ characters between dots and
also set the meta tag to prevent format detection.
Not every email template has been changed in this way - just the activation emails but
it may be that we should be setting the above meta tag in all of our emails too.
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Remove `db.DefaultContext` usage in routers, use `ctx` directly
* Use `ctx` directly if there is one, remove some `db.DefaultContext` in `services`
* Use ctx instead of db.DefaultContext for `cmd` and some `modules` packages
* fix incorrect context usage
Unfortunately fixing changes to `mail_issue.go` did not get included in #19131.
We also need to not send issue comment mails to deactivated users.
Fix#18950
Signed-off-by: Andrew Thornton <art27@cantab.net>
Emails should not be sent to inactive users except for Activate and ResetPassword
messages.
Fix#18950
Signed-off-by: Andrew Thornton <art27@cantab.net>
We can't depend on `latest` version of gofumpt because the output will
not be stable across versions. Lock it down to the latest version
released yesterday and run it again.
* Run 'make fmt'
'make fmt' currently produces this change, I'm not sure how CI did not
fail on it, I made sure I have `mvdan.cc/gofumpt@latest`.
* Fix 'make fmt-check'
`make fmt-check` did not run all commands that `make fmt` did, resulting
in missed diffs. Fix that by just depending on the `fmt` target.
Includes: https://github.com/go-gitea/gitea/pull/18633
* Make gitea-fmt work with -l and -d and integrate gofumpt
This implements -l, -w and -d with gitea-fmt and merges gofumpt.
Signed-off-by: Andrew Thornton <art27@cantab.net>
* as per silverwind
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Apply suggestions from code review
* use -l instead of -d for fmt-check
Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: Andrew Thornton <art27@cantab.net>
* Prevent merge messages from being sorted to the top of email chains
Gitea will currrently resend the same message-id for the closed/merged/reopened
messages for issues. This will cause the merged message to leap to the top of an
email chain and become out of sync.
This PR adds specific suffices for these actions.
Fix#18560
Signed-off-by: Andrew Thornton <art27@cantab.net>
* add test
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Start adding mechanism to return unhandled data
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Create pushback interface
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Add Pausable interface to WorkerPool and Manager
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Implement Pausable and PushBack for the bytefifos
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Implement Pausable and Pushback for ChannelQueues and ChannelUniqueQueues
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Wire in UI for pausing
Signed-off-by: Andrew Thornton <art27@cantab.net>
* add testcases and fix a few issues
Signed-off-by: Andrew Thornton <art27@cantab.net>
* fix build
Signed-off-by: Andrew Thornton <art27@cantab.net>
* prevent "race" in the test
Signed-off-by: Andrew Thornton <art27@cantab.net>
* fix jsoniter mismerge
Signed-off-by: Andrew Thornton <art27@cantab.net>
* fix conflicts
Signed-off-by: Andrew Thornton <art27@cantab.net>
* fix format
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Add warnings for no worker configurations and prevent data-loss with redis/levelqueue
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Use StopTimer
Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: Lauris BH <lauris@nix.lv>
Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
* Add config option to hide issue events
Adds a config option `HIDE_ISSUE_EVENTS` to hide most issue events (changed labels, milestones, projects...) on the issue detail page.
If this is true, only the following events (comment types) are shown:
* plain comments
* closed/reopned/merged
* reviews
* Make configurable using a list
* Add docs
* Add missing newline
* Fix merge issues
* Allow changes per user settings
* Fix lint
* Rm old docs
* Apply suggestions from code review
* Use bitsets
* Rm comment
* fmt
* Fix lint
* Use variable/constant to provide key
* fmt
* fix lint
* refactor
* Add a prefix for user setting key
* Add license comment
* Add license comment
* Update services/forms/user_form_hidden_comments.go
Co-authored-by: Gusted <williamzijl7@hotmail.com>
* check len == 0
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: zeripath <art27@cantab.net>
Co-authored-by: Gusted <williamzijl7@hotmail.com>
Co-authored-by: 6543 <6543@obermui.de>
This PR continues the work in #17125 by progressively ensuring that git
commands run within the request context.
This now means that the if there is a git repo already open in the context it will be used instead of reopening it.
Signed-off-by: Andrew Thornton <art27@cantab.net>
It appears that several versions of sendmail require that the mail is sent to them with
LF line endings instead of CRLF endings - which of course they will then convert back
to CRLF line endings to comply with the SMTP standard.
This PR adds another setting SENDMAIL_CONVERT_CRLF which will pass the message writer
through a filter. This will filter out and convert CRLFs to LFs before writing them
out to sendmail.
Fix#18024
Signed-off-by: Andrew Thornton <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>
Running `make test-backend` will delete `data/` due to reloading the configuration and resetting the appdatapath.
This PR removes this unnecessary config reload but also adds extra code in to the unittest main to prevent its cleanup from deleting the wrong directory.
Signed-off-by: Andrew Thornton <art27@cantab.net>
* 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
* 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>
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>
* Add settings to allow different SMTP envelope from address
Sometimes it may be advisable to hide or alias the from address on an SMTP mail
envelope. This PR adds two new options to the mailer to allow setting of an overriding
from address.
Fix#17477
Signed-off-by: Andrew Thornton <art27@cantab.net>
There was a mistake in the template file: `templates/mail/issue/assigned.tmpl`
where the repourl was generated from a non-existent release instead of the issue.
This PR changes this to use the issue but also ensure that the issue repo is loaded.
It also slightly improves the English locale string.
Fix#17160
Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: delvh <dev.lh@web.de>
When users login and are autoregistered send email notification.
Fix#16178
* Protect public functions within the mailer by testing if the mailer is configured
Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: 6543 <6543@obermui.de>
* #14559 Reduce amount of email notifications for WIP draft PR's
don't notify repo watchers of WIP draft PR's
* #13190 Notification when WIP Pull Request is ready for review
* Send email notification to repo watchers when WIP PR is created
* Send ui notification to repo watchers when WIP PR is created
* send specific email notification when PR is marked ready for review
instead of reusing the CreatePullRequest action
* Fix lint error
Co-authored-by: techknowlogick <techknowlogick@gitea.io>
* Unexport SendUserMail
* Instead of "[]*models.User" or "[]string" lists infent "[]*MailRecipient" for mailer
* adopt
* code format
* TODOs for "i18n"
* clean
* no fallback for lang -> just use english
* lint
* exec testComposeIssueCommentMessage per lang and use only emails
* rm MailRecipient
* Dont reload from users from db if you alredy have in ram
* nits
* minimize diff
Signed-off-by: 6543 <6543@obermui.de>
* localize subjects
* linter ...
* Tr extend
* start tmpl edit ...
* Apply suggestions from code review
* use translation.Locale
* improve mailIssueCommentBatch
Signed-off-by: Andrew Thornton <art27@cantab.net>
* add i18n to datas
Signed-off-by: Andrew Thornton <art27@cantab.net>
* a comment
Co-authored-by: Andrew Thornton <art27@cantab.net>
* make repo as "pending transfer" if on transfer start doer has no right to create repo in new destination
* if new pending transfer ocured, create UI & Mail notifications
Fixes#14187: mention handling extracted from email notification code
Fixes#14013: add notification for mentions in pull request code comments
Fixes#13450: Not receiving any emails with setting "Only Email on Mention"
* Make sure that sendmail processes register with the process manager
* Provide a timeout for these (initially of 5 minutes)
* Add configurable value and tie in to documentation
* Tie in to the admin config page.
Signed-off-by: Andrew Thornton <art27@cantab.net>
* Support unicode emojis and remove emojify.js
This PR replaces all use of emojify.js and adds unicode emoji support to various areas of gitea.
This works in a few ways:
First it adds emoji parsing support into gitea itself. This allows us to
* Render emojis from valid alias (😄)
* Detect unicode emojis and let us put them in their own class with proper aria-labels and styling
* Easily allow for custom "emoji"
* Support all emoji rendering and features without javascript
* Uses plain unicode and lets the system render in appropriate emoji font
* Doesn't leave us relying on external sources for updates/fixes/features
That same list of emoji is also used to create a json file which replaces the part of emojify.js that populates the emoji search tribute. This file is about 35KB with GZIP turned on and I've set it to load after the page renders to not hinder page load time (and this removes loading emojify.js also)
For custom "emoji" it uses a pretty simple scheme of just looking for /emojis/img/name.png where name is something a user has put in the "allowed reactions" setting we already have. The gitea reaction that was previously hard coded into a forked copy of emojify.js is included and works as a custom reaction under this method.
The emoji data sourced here is from https://github.com/github/gemoji which is the gem library Github uses for their emoji rendering (and a data source for other sites). So we should be able to easily render any emoji and :alias: that Github can, removing any errors from migrated content. They also update it as well, so we can sync when there are new unicode emoji lists released.
I've included a slimmed down and slightly modified forked copy of https://github.com/knq/emoji to make up our own emoji module. The code is pretty straight forward and again allows us to have a lot of flexibility in what happens.
I had seen a few comments about performance in some of the other threads if we render this ourselves, but there doesn't seem to be any issue here. In a test it can parse, convert, and render 1,000 emojis inside of a large markdown table in about 100ms on my laptop (which is many more emojis than will ever be in any normal issue). This also prevents any flickering and other weirdness from using javascript to render some things while using go for others.
Not included here are image fall back URLS. I don't really think they are necessary for anything new being written in 2020. However, managing the emoji ourselves would allow us to add these as a feature later on if it seems necessary.
Fixes: https://github.com/go-gitea/gitea/issues/9182
Fixes: https://github.com/go-gitea/gitea/issues/8974
Fixes: https://github.com/go-gitea/gitea/issues/8953
Fixes: https://github.com/go-gitea/gitea/issues/6628
Fixes: https://github.com/go-gitea/gitea/issues/5130
* add new shared function emojiHTML
* don't increase emoji size in issue title
* Update templates/repo/issue/view_content/add_reaction.tmpl
Co-Authored-By: 6543 <6543@obermui.de>
* Support for emoji rendering in various templates
* Render code and review comments as they should be
* Better way to handle mail subjects
* insert unicode from tribute selection
* Add template helper for plain text when needed
* Use existing replace function I forgot about
* Don't include emoji greater than Unicode Version 12
Only include emoji and aliases in JSON
* Update build/generate-emoji.go
* Tweak regex slightly to really match everything including random invisible characters. Run tests for every emoji we have
* final updates
* code review
* code review
* hard code gitea custom emoji to match previous behavior
* Update .eslintrc
Co-Authored-By: silverwind <me@silverwind.io>
* disable preempt
Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: Lauris BH <lauris@nix.lv>
Co-authored-by: guillep2k <18600385+guillep2k@users.noreply.github.com>
* Some more e-mail notification fixes
A few more small e-mail notification fixes/changes
* Style footer of notification email to be smaller
* Include text for when pull request is merged
* Don't include original body of issue or PR when merging/closing by
setting issue.Content to "" in these cases
* Set Re: prefix and meessage-ID headers based on actName instead of checking for a
comment. This fixes a bug where certain actions that didn't have a
comment were setting Message-ID instead of In-Reply-To which caused some
mail programs not to show those messages as they would have had the same
Message-ID as a previous message. Also fixes the case where a final
comment and closing message would have been displayed out of order if
you didn't have a copy of the original issue/pr cretion message.
* Update other template footers for consistency
* Add ActionCommentPull action
Adds ActionCommentPull action to distinguish between a comment on an
issue and on a pull request
* Update modules/notification/action/action.go
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
* Mail issue subscribers, rework the function
* Simplify a little more
* Fix unused variable
* Refactor mail delivery to avoid heavy load on server
* Avoid splitting into too many goroutines
* Fix comments and optimize GetMaileableUsersByIDs()
* Fix return on errors
* Add template capability for issue mail subject
* Remove test string
* Fix trim subject length
* Add comment to template and run make fmt
* Add information for the template
* Rename defaultMailSubject() to fallbackMailSubject()
* General rewrite of the mail template code
* Fix .Doer name
* Use text/template for subject instead of html
* Fix subject Re: prefix
* Fix mail tests
* Fix static templates
* [skip ci] Updated translations via Crowdin
* Expose db.SetMaxOpenConns and allow non MySQL dbs to set conn pool params (#8528)
* Expose db.SetMaxOpenConns and allow other dbs to set their connection params
* Add note about port exhaustion
Co-Authored-By: guillep2k <18600385+guillep2k@users.noreply.github.com>
* Prevent .code-view from overriding font on icon fonts (#8614)
* Correct some outdated statements in the contributing guidelines (#8612)
* More information for drone-cli in CONTRIBUTING.md
* Increases the version of drone-cli to 1.2.0
* Adds a note for the Docker Toolbox on Windows
Signed-off-by: LukBukkit <luk.bukkit@gmail.com>
* Fix the url for the blog repository (now on gitea.com)
Signed-off-by: LukBukkit <luk.bukkit@gmail.com>
* Remove TrN due to lack of lang context
* Redo templates to match previous code
* Fix extra character in template
* Unify PR & Issue tempaltes, fix format
* Remove default subject
* Add template tests
* Fix template
* Remove replaced function
* Provide User as models.User for better consistency
* Add docs
* Fix doc inaccuracies, improve examples
* Change mail footer to math AppName
* Add test for mail subject/body template separation
* Add support for code review comments
* Update docs/content/doc/advanced/mail-templates-us.md
Co-Authored-By: 6543 <24977596+6543@users.noreply.github.com>
* Send email to assigned user
* Only send mail if enabled
* Mail also when assigned through API
* Need to refactor functions from models to issue service
* Refer to issue index rather than ID
* Disable email notifications completly at initalization if global disable
* Check of user enbled mail shall be in mail notification function only
* Initialize notifications from routers init function.
* Use the assigned comment when sending assigned mail
* Refactor so that assignees always added as separate step when new issue/pr.
* Check error from AddAssignees
* Check if user can be assiged to issue or pull request
* Missing return
* Refactor of CanBeAssigned check.
CanBeAssigned shall have same check as UI.
* Clarify function names (toggle rather than update/change), and clean up.
* Fix review comments.
* Flash error if assignees was not added when creating issue/pr
* Generate error if assignee users doesn't exist
* Draft for ResolveMentionsByVisibility()
* Correct typo
* Resolve teams instead of orgs for mentions
* Create test for ResolveMentionsByVisibility
* Fix check for individual users and doer
* Test and fix team mentions
* Run all mentions through visibility filter
* Fix error check
* Simplify code, fix doer included in teams
* Simplify team id list build
* move all mail related codes from models to modules/mailer
* fix lint
* use DBContext instead Engine
* use WithContext not WithEngine
* Use DBContext instead of Engine
* don't use defer when sess.Close()
* move DBContext to context.go and add some methods
* move mailer from modules/ to services
* fix lint
* fix tests
* fix fmt
* add gitea copyright
* fix tests
* don't expose db functions
* make code clear
* add DefaultDBContext
* fix build
* fix bug
