Add user blocking (#29028)

Fixes #17453

This PR adds the abbility to block a user from a personal account or
organization to restrict how the blocked user can interact with the
blocker. The docs explain what's the consequence of blocking a user.

Screenshots:


![grafik](4ed884f3-e06a-4862-afd3-3b8aa2488dc6)


![grafik](ae6d4981-f252-4f50-a429-04f0f9f1cdf1)


![grafik](ca153599-5b0f-4b4a-90fe-18bdfd6f0b6b)

---------

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

models/repo/user_repo.go

@@ -16,47 +16,82 @@ import (
 	"xorm.io/builder"
 )
 
+type StarredReposOptions struct {
+	db.ListOptions
+	StarrerID      int64
+	RepoOwnerID    int64
+	IncludePrivate bool
+}
+
+func (opts *StarredReposOptions) ToConds() builder.Cond {
+	var cond builder.Cond = builder.Eq{
+		"star.uid": opts.StarrerID,
+	}
+	if opts.RepoOwnerID != 0 {
+		cond = cond.And(builder.Eq{
+			"repository.owner_id": opts.RepoOwnerID,
+		})
+	}
+	if !opts.IncludePrivate {
+		cond = cond.And(builder.Eq{
+			"repository.is_private": false,
+		})
+	}
+	return cond
+}
+
+func (opts *StarredReposOptions) ToJoins() []db.JoinFunc {
+	return []db.JoinFunc{
+		func(e db.Engine) error {
+			e.Join("INNER", "star", "`repository`.id=`star`.repo_id")
+			return nil
+		},
+	}
+}
+
 // GetStarredRepos returns the repos starred by a particular user
-func GetStarredRepos(ctx context.Context, userID int64, private bool, listOptions db.ListOptions) ([]*Repository, error) {
-	sess := db.GetEngine(ctx).
-		Where("star.uid=?", userID).
-		Join("LEFT", "star", "`repository`.id=`star`.repo_id")
-	if !private {
-		sess = sess.And("is_private=?", false)
+func GetStarredRepos(ctx context.Context, opts *StarredReposOptions) ([]*Repository, error) {
+	return db.Find[Repository](ctx, opts)
+}
+
+type WatchedReposOptions struct {
+	db.ListOptions
+	WatcherID      int64
+	RepoOwnerID    int64
+	IncludePrivate bool
+}
+
+func (opts *WatchedReposOptions) ToConds() builder.Cond {
+	var cond builder.Cond = builder.Eq{
+		"watch.user_id": opts.WatcherID,
 	}
-
-	if listOptions.Page != 0 {
-		sess = db.SetSessionPagination(sess, &listOptions)
-
-		repos := make([]*Repository, 0, listOptions.PageSize)
-		return repos, sess.Find(&repos)
+	if opts.RepoOwnerID != 0 {
+		cond = cond.And(builder.Eq{
+			"repository.owner_id": opts.RepoOwnerID,
+		})
 	}
+	if !opts.IncludePrivate {
+		cond = cond.And(builder.Eq{
+			"repository.is_private": false,
+		})
+	}
+	return cond.And(builder.Neq{
+		"watch.mode": WatchModeDont,
+	})
+}
 
-	repos := make([]*Repository, 0, 10)
-	return repos, sess.Find(&repos)
+func (opts *WatchedReposOptions) ToJoins() []db.JoinFunc {
+	return []db.JoinFunc{
+		func(e db.Engine) error {
+			e.Join("INNER", "watch", "`repository`.id=`watch`.repo_id")
+			return nil
+		},
+	}
 }
 
 // GetWatchedRepos returns the repos watched by a particular user
-func GetWatchedRepos(ctx context.Context, userID int64, private bool, listOptions db.ListOptions) ([]*Repository, int64, error) {
-	sess := db.GetEngine(ctx).
-		Where("watch.user_id=?", userID).
-		And("`watch`.mode<>?", WatchModeDont).
-		Join("LEFT", "watch", "`repository`.id=`watch`.repo_id")
-	if !private {
-		sess = sess.And("is_private=?", false)
-	}
-
-	if listOptions.Page != 0 {
-		sess = db.SetSessionPagination(sess, &listOptions)
-
-		repos := make([]*Repository, 0, listOptions.PageSize)
-		total, err := sess.FindAndCount(&repos)
-		return repos, total, err
-	}
-
-	repos := make([]*Repository, 0, 10)
-	total, err := sess.FindAndCount(&repos)
-	return repos, total, err
+func GetWatchedRepos(ctx context.Context, opts *WatchedReposOptions) ([]*Repository, int64, error) {
+	return db.FindAndCount[Repository](ctx, opts)
 }
 
 // GetRepoAssignees returns all users that have write access and can be assigned to issues