merge upstream main

backend/ent/schema/announcement_read.go

@@ -0,0 +1,65 @@
+package schema
+
+import (
+	"time"
+
+	"entgo.io/ent"
+	"entgo.io/ent/dialect"
+	"entgo.io/ent/dialect/entsql"
+	"entgo.io/ent/schema"
+	"entgo.io/ent/schema/edge"
+	"entgo.io/ent/schema/field"
+	"entgo.io/ent/schema/index"
+)
+
+// AnnouncementRead holds the schema definition for the AnnouncementRead entity.
+//
+// 记录用户对公告的已读状态（首次已读时间）。
+type AnnouncementRead struct {
+	ent.Schema
+}
+
+func (AnnouncementRead) Annotations() []schema.Annotation {
+	return []schema.Annotation{
+		entsql.Annotation{Table: "announcement_reads"},
+	}
+}
+
+func (AnnouncementRead) Fields() []ent.Field {
+	return []ent.Field{
+		field.Int64("announcement_id"),
+		field.Int64("user_id"),
+		field.Time("read_at").
+			Default(time.Now).
+			SchemaType(map[string]string{dialect.Postgres: "timestamptz"}).
+			Comment("用户首次已读时间"),
+		field.Time("created_at").
+			Immutable().
+			Default(time.Now).
+			SchemaType(map[string]string{dialect.Postgres: "timestamptz"}),
+	}
+}
+
+func (AnnouncementRead) Edges() []ent.Edge {
+	return []ent.Edge{
+		edge.From("announcement", Announcement.Type).
+			Ref("reads").
+			Field("announcement_id").
+			Unique().
+			Required(),
+		edge.From("user", User.Type).
+			Ref("announcement_reads").
+			Field("user_id").
+			Unique().
+			Required(),
+	}
+}
+
+func (AnnouncementRead) Indexes() []ent.Index {
+	return []ent.Index{
+		index.Fields("announcement_id"),
+		index.Fields("user_id"),
+		index.Fields("read_at"),
+		index.Fields("announcement_id", "user_id").Unique(),
+	}
+}