Domain block (#76)

* start work on admin domain blocking

* move stuff around + further work on domain blocks

* move + restructure processor

* prep work for deleting account

* tidy

* go fmt

* formatting

* domain blocking more work

* check domain blocks way earlier on

* progress on delete account

* delete more stuff when an account is gone

* and more...

* domain blocky block block

* get individual domain block, delete a block

1 files changed, 269 insertions, 0 deletions

diff --git a/internal/processing/status/util.go b/internal/processing/status/util.go
new file mode 100644
index 000000000..0a023eab6
--- /dev/null
+++ b/internal/processing/status/util.go
@@ -0,0 +1,269 @@
+package status
+
+import (
+	"errors"
+	"fmt"
+	"strings"
+
+	apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
+	"github.com/superseriousbusiness/gotosocial/internal/db"
+	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+	"github.com/superseriousbusiness/gotosocial/internal/id"
+	"github.com/superseriousbusiness/gotosocial/internal/util"
+)
+
+func (p *processor) processVisibility(form *apimodel.AdvancedStatusCreateForm, accountDefaultVis gtsmodel.Visibility, status *gtsmodel.Status) error {
+	// by default all flags are set to true
+	gtsAdvancedVis := &gtsmodel.VisibilityAdvanced{
+		Federated: true,
+		Boostable: true,
+		Replyable: true,
+		Likeable:  true,
+	}
+
+	var gtsBasicVis gtsmodel.Visibility
+	// Advanced takes priority if it's set.
+	// If it's not set, take whatever masto visibility is set.
+	// If *that's* not set either, then just take the account default.
+	// If that's also not set, take the default for the whole instance.
+	if form.VisibilityAdvanced != nil {
+		gtsBasicVis = gtsmodel.Visibility(*form.VisibilityAdvanced)
+	} else if form.Visibility != "" {
+		gtsBasicVis = p.tc.MastoVisToVis(form.Visibility)
+	} else if accountDefaultVis != "" {
+		gtsBasicVis = accountDefaultVis
+	} else {
+		gtsBasicVis = gtsmodel.VisibilityDefault
+	}
+
+	switch gtsBasicVis {
+	case gtsmodel.VisibilityPublic:
+		// for public, there's no need to change any of the advanced flags from true regardless of what the user filled out
+		break
+	case gtsmodel.VisibilityUnlocked:
+		// for unlocked the user can set any combination of flags they like so look at them all to see if they're set and then apply them
+		if form.Federated != nil {
+			gtsAdvancedVis.Federated = *form.Federated
+		}
+
+		if form.Boostable != nil {
+			gtsAdvancedVis.Boostable = *form.Boostable
+		}
+
+		if form.Replyable != nil {
+			gtsAdvancedVis.Replyable = *form.Replyable
+		}
+
+		if form.Likeable != nil {
+			gtsAdvancedVis.Likeable = *form.Likeable
+		}
+
+	case gtsmodel.VisibilityFollowersOnly, gtsmodel.VisibilityMutualsOnly:
+		// for followers or mutuals only, boostable will *always* be false, but the other fields can be set so check and apply them
+		gtsAdvancedVis.Boostable = false
+
+		if form.Federated != nil {
+			gtsAdvancedVis.Federated = *form.Federated
+		}
+
+		if form.Replyable != nil {
+			gtsAdvancedVis.Replyable = *form.Replyable
+		}
+
+		if form.Likeable != nil {
+			gtsAdvancedVis.Likeable = *form.Likeable
+		}
+
+	case gtsmodel.VisibilityDirect:
+		// direct is pretty easy: there's only one possible setting so return it
+		gtsAdvancedVis.Federated = true
+		gtsAdvancedVis.Boostable = false
+		gtsAdvancedVis.Federated = true
+		gtsAdvancedVis.Likeable = true
+	}
+
+	status.Visibility = gtsBasicVis
+	status.VisibilityAdvanced = gtsAdvancedVis
+	return nil
+}
+
+func (p *processor) processReplyToID(form *apimodel.AdvancedStatusCreateForm, thisAccountID string, status *gtsmodel.Status) error {
+	if form.InReplyToID == "" {
+		return nil
+	}
+
+	// If this status is a reply to another status, we need to do a bit of work to establish whether or not this status can be posted:
+	//
+	// 1. Does the replied status exist in the database?
+	// 2. Is the replied status marked as replyable?
+	// 3. Does a block exist between either the current account or the account that posted the status it's replying to?
+	//
+	// If this is all OK, then we fetch the repliedStatus and the repliedAccount for later processing.
+	repliedStatus := &gtsmodel.Status{}
+	repliedAccount := &gtsmodel.Account{}
+	// check replied status exists + is replyable
+	if err := p.db.GetByID(form.InReplyToID, repliedStatus); err != nil {
+		if _, ok := err.(db.ErrNoEntries); ok {
+			return fmt.Errorf("status with id %s not replyable because it doesn't exist", form.InReplyToID)
+		}
+		return fmt.Errorf("status with id %s not replyable: %s", form.InReplyToID, err)
+	}
+
+	if repliedStatus.VisibilityAdvanced != nil {
+		if !repliedStatus.VisibilityAdvanced.Replyable {
+			return fmt.Errorf("status with id %s is marked as not replyable", form.InReplyToID)
+		}
+	}
+
+	// check replied account is known to us
+	if err := p.db.GetByID(repliedStatus.AccountID, repliedAccount); err != nil {
+		if _, ok := err.(db.ErrNoEntries); ok {
+			return fmt.Errorf("status with id %s not replyable because account id %s is not known", form.InReplyToID, repliedStatus.AccountID)
+		}
+		return fmt.Errorf("status with id %s not replyable: %s", form.InReplyToID, err)
+	}
+	// check if a block exists
+	if blocked, err := p.db.Blocked(thisAccountID, repliedAccount.ID); err != nil {
+		if _, ok := err.(db.ErrNoEntries); !ok {
+			return fmt.Errorf("status with id %s not replyable: %s", form.InReplyToID, err)
+		}
+	} else if blocked {
+		return fmt.Errorf("status with id %s not replyable", form.InReplyToID)
+	}
+	status.InReplyToID = repliedStatus.ID
+	status.InReplyToAccountID = repliedAccount.ID
+
+	return nil
+}
+
+func (p *processor) processMediaIDs(form *apimodel.AdvancedStatusCreateForm, thisAccountID string, status *gtsmodel.Status) error {
+	if form.MediaIDs == nil {
+		return nil
+	}
+
+	gtsMediaAttachments := []*gtsmodel.MediaAttachment{}
+	attachments := []string{}
+	for _, mediaID := range form.MediaIDs {
+		// check these attachments exist
+		a := &gtsmodel.MediaAttachment{}
+		if err := p.db.GetByID(mediaID, a); err != nil {
+			return fmt.Errorf("invalid media type or media not found for media id %s", mediaID)
+		}
+		// check they belong to the requesting account id
+		if a.AccountID != thisAccountID {
+			return fmt.Errorf("media with id %s does not belong to account %s", mediaID, thisAccountID)
+		}
+		// check they're not already used in a status
+		if a.StatusID != "" || a.ScheduledStatusID != "" {
+			return fmt.Errorf("media with id %s is already attached to a status", mediaID)
+		}
+		gtsMediaAttachments = append(gtsMediaAttachments, a)
+		attachments = append(attachments, a.ID)
+	}
+	status.GTSMediaAttachments = gtsMediaAttachments
+	status.Attachments = attachments
+	return nil
+}
+
+func (p *processor) processLanguage(form *apimodel.AdvancedStatusCreateForm, accountDefaultLanguage string, status *gtsmodel.Status) error {
+	if form.Language != "" {
+		status.Language = form.Language
+	} else {
+		status.Language = accountDefaultLanguage
+	}
+	if status.Language == "" {
+		return errors.New("no language given either in status create form or account default")
+	}
+	return nil
+}
+
+func (p *processor) processMentions(form *apimodel.AdvancedStatusCreateForm, accountID string, status *gtsmodel.Status) error {
+	menchies := []string{}
+	gtsMenchies, err := p.db.MentionStringsToMentions(util.DeriveMentionsFromStatus(form.Status), accountID, status.ID)
+	if err != nil {
+		return fmt.Errorf("error generating mentions from status: %s", err)
+	}
+	for _, menchie := range gtsMenchies {
+		menchieID, err := id.NewRandomULID()
+		if err != nil {
+			return err
+		}
+		menchie.ID = menchieID
+
+		if err := p.db.Put(menchie); err != nil {
+			return fmt.Errorf("error putting mentions in db: %s", err)
+		}
+		menchies = append(menchies, menchie.ID)
+	}
+	// add full populated gts menchies to the status for passing them around conveniently
+	status.GTSMentions = gtsMenchies
+	// add just the ids of the mentioned accounts to the status for putting in the db
+	status.Mentions = menchies
+	return nil
+}
+
+func (p *processor) processTags(form *apimodel.AdvancedStatusCreateForm, accountID string, status *gtsmodel.Status) error {
+	tags := []string{}
+	gtsTags, err := p.db.TagStringsToTags(util.DeriveHashtagsFromStatus(form.Status), accountID, status.ID)
+	if err != nil {
+		return fmt.Errorf("error generating hashtags from status: %s", err)
+	}
+	for _, tag := range gtsTags {
+		if err := p.db.Upsert(tag, "name"); err != nil {
+			return fmt.Errorf("error putting tags in db: %s", err)
+		}
+		tags = append(tags, tag.ID)
+	}
+	// add full populated gts tags to the status for passing them around conveniently
+	status.GTSTags = gtsTags
+	// add just the ids of the used tags to the status for putting in the db
+	status.Tags = tags
+	return nil
+}
+
+func (p *processor) processEmojis(form *apimodel.AdvancedStatusCreateForm, accountID string, status *gtsmodel.Status) error {
+	emojis := []string{}
+	gtsEmojis, err := p.db.EmojiStringsToEmojis(util.DeriveEmojisFromStatus(form.Status), accountID, status.ID)
+	if err != nil {
+		return fmt.Errorf("error generating emojis from status: %s", err)
+	}
+	for _, e := range gtsEmojis {
+		emojis = append(emojis, e.ID)
+	}
+	// add full populated gts emojis to the status for passing them around conveniently
+	status.GTSEmojis = gtsEmojis
+	// add just the ids of the used emojis to the status for putting in the db
+	status.Emojis = emojis
+	return nil
+}
+
+func (p *processor) processContent(form *apimodel.AdvancedStatusCreateForm, accountID string, status *gtsmodel.Status) error {
+	if form.Status == "" {
+		status.Content = ""
+		return nil
+	}
+
+	// surround the whole status in '<p>'
+	content := fmt.Sprintf(`<p>%s</p>`, form.Status)
+
+	// format mentions nicely
+	for _, menchie := range status.GTSMentions {
+		targetAccount := &gtsmodel.Account{}
+		if err := p.db.GetByID(menchie.TargetAccountID, targetAccount); err == nil {
+			mentionContent := fmt.Sprintf(`<span class="h-card"><a href="%s" class="u-url mention">@<span>%s</span></a></span>`, targetAccount.URL, targetAccount.Username)
+			content = strings.ReplaceAll(content, menchie.NameString, mentionContent)
+		}
+	}
+
+	// format tags nicely
+	for _, tag := range status.GTSTags {
+		tagContent := fmt.Sprintf(`<a href="%s" class="mention hashtag" rel="tag">#<span>%s</span></a>`, tag.URL, tag.Name)
+		content = strings.ReplaceAll(content, fmt.Sprintf("#%s", tag.Name), tagContent)
+	}
+
+	// replace newlines with breaks
+	content = strings.ReplaceAll(content, "\n", "<br />")
+
+	status.Content = content
+	return nil
+}