const admin = require("firebase-admin");
const { onDocumentWritten } = require("firebase-functions/firestore");
const { refList } = require("../index");
const { getSunoTimestamps } = require("./lyrics");
const { deleteFolder } = require("../helpers/firebase");

exports.onProjectUpdate = onDocumentWritten(
  "projects/{projectId}",
  async (projectSnap) => {
    try {
      const { projectId } = projectSnap.params;

      const currentData = projectSnap?.data?.after?.data() || null;
      const previousData = projectSnap?.data?.before?.data() || null;

      if (!previousData?.songUrl && currentData?.songUrl) {
        await getSunoTimestamps(projectId);
      }

      if (!currentData) {
        const { userId } = previousData || {};

        //delete folder
        await deleteFolder(`users/${userId}/projects/${projectId}/`);

        //delete tasks
        const snapshot = await refList.tasks
          .where("projectId", "==", projectId)
          .get();
        if (snapshot.empty) return null;
        const batch = admin.firestore().batch();
        snapshot.forEach((doc) => {
          batch.delete(doc.ref);
        });
        await batch.commit();
      } else {
        if (previousData) {
          // edit
          if (!previousData?.songUrl && currentData?.songUrl) {
            await refList.projects.doc(projectId).update({
              hasSong: true,
            });
          }
          if (!previousData?.playbackUrl && currentData?.playbackUrl) {
            await refList.projects.doc(projectId).update({
              hasPlayback: true,
            });
          }
        }
      }
    } catch (e) {
      console.log(e);
    }
  }
);