feat(chat): sqlc queries for conversations/messages/attachments/templates/endpoints/models/usage

internal/chat/queries/attachments.sql

@@ -0,0 +1,32 @@
+-- name: InsertAttachment :one
+INSERT INTO message_attachments (id, user_id, message_id, filename, mime_type, size_bytes, sha256, storage_path)
+VALUES ($1, $2, NULL, $3, $4, $5, $6, $7)
+RETURNING *;
+
+-- name: GetAttachment :one
+SELECT * FROM message_attachments WHERE id = $1;
+
+-- name: ListAttachmentsForMessage :many
+SELECT * FROM message_attachments WHERE message_id = $1 ORDER BY created_at ASC;
+
+-- name: ListOrphanAttachmentsForUser :many
+SELECT * FROM message_attachments
+WHERE user_id = $1 AND message_id IS NULL AND id = ANY($2::uuid[]);
+
+-- name: AttachToMessage :exec
+UPDATE message_attachments SET message_id = $2 WHERE id = ANY($1::uuid[]);
+
+-- name: DeleteAttachment :exec
+DELETE FROM message_attachments WHERE id = $1;
+
+-- name: ListExpiredOrphans :many
+SELECT id, storage_path FROM message_attachments
+WHERE message_id IS NULL AND created_at < NOW() - ($1::interval);
+
+-- name: ListAttachmentsForSoftDeletedConversations :many
+SELECT a.id, a.storage_path
+FROM message_attachments a
+JOIN messages m ON m.id = a.message_id
+JOIN conversations c ON c.id = m.conversation_id
+WHERE c.deleted_at IS NOT NULL
+  AND c.deleted_at < NOW() - ($1::interval);