[IN-79]: fix/cleanup-files-name-indexes

migrations/20241001112638-drop-name-indexes-files.js

@@ -0,0 +1,36 @@
+'use strict';
+
+const indexName = 'files_status_index';
+
+/** @type {import('sequelize-cli').Migration} */
+module.exports = {
+  async up(queryInterface, Sequelize) {
+    await queryInterface.sequelize.query(
+      `
+      DROP INDEX IF EXISTS files_status_index;
+      DROP INDEX IF EXISTS files_name_type_folderid_deleted_unique;
+      DROP INDEX IF EXISTS files_plainname_type_folderid_deleted_key;
+      `,
+    );
+  },
+
+  async down(queryInterface, Sequelize) {
+    await queryInterface.sequelize.query(
+      `CREATE INDEX CONCURRENTLY ${indexName} ON files (status)`,
+    );
+    await queryInterface.addIndex('files', ['name', 'type', 'folder_id'], {
+      name: 'files_name_type_folderid_deleted_unique',
+      unique: true,
+      where: { deleted: { [Sequelize.Op.eq]: false } },
+    });
+    await queryInterface.addIndex(
+      'files',
+      ['plain_name', 'type', 'folder_id'],
+      {
+        name: 'files_plainname_type_folderid_deleted_key',
+        unique: true,
+        where: { deleted: { [Sequelize.Op.eq]: false } },
+      },
+    );
+  },
+};

migrations/20241001115355-script-to-remove-plain-name-duplicates-files.js

@@ -0,0 +1,104 @@
+'use strict';
+
+/** @type {import('sequelize-cli').Migration} */
+module.exports = {
+  async up(queryInterface, Sequelize) {
+    await queryInterface.sequelize.query(
+      `
+      DO $$
+      DECLARE
+          outer_rec RECORD;
+          inner_rec RECORD;
+          new_name TEXT;
+          suffix INT;
+          total_duplicates INT;
+          renamed_count INT := 0;
+      BEGIN
+          -- Find and loop over duplicates
+          FOR outer_rec IN
+              SELECT plain_name, COALESCE(type, '') AS type, folder_id, user_id
+              FROM public.files
+              WHERE status = 'EXISTS'
+                AND plain_name IS NOT NULL
+              GROUP BY plain_name, COALESCE(type, ''), folder_id, user_id
+              HAVING COUNT(*) > 1
+              ORDER BY user_id
+          LOOP
+              SELECT COUNT(*)
+              INTO total_duplicates
+              FROM public.files
+              WHERE plain_name = outer_rec.plain_name 
+                AND COALESCE(type, '') = outer_rec.type 
+                AND folder_id = outer_rec.folder_id
+                AND user_id = outer_rec.user_id
+                AND status = 'EXISTS'
+                AND plain_name is not null;
+
+              RAISE NOTICE 'Found % duplicates for plain_name: %, type: %, folder_id: %, user_id: %', 
+                  total_duplicates, outer_rec.plain_name, outer_rec.type, outer_rec.folder_id, outer_rec.user_id;
+
+              suffix := 1;
+
+              -- Renaming loop
+              FOR inner_rec IN
+                  SELECT id, plain_name
+                  FROM public.files
+                  WHERE plain_name = outer_rec.plain_name 
+                    AND COALESCE(type, '') = outer_rec.type 
+                    AND folder_id = outer_rec.folder_id
+                    AND user_id = outer_rec.user_id
+                    AND status = 'EXISTS'
+                  ORDER BY id
+              LOOP
+                  -- Prepare the new name for the duplicates
+                  new_name := inner_rec.plain_name;
+
+                  -- If it is not the first file, then generate a suffix
+                  IF suffix > 1 THEN
+                      -- Try diff suffixes until finding one which is free
+                      LOOP
+                          new_name := inner_rec.plain_name || ' (' || suffix || ')';
+
+                          -- Is the suffix already taken?
+                          EXIT WHEN NOT EXISTS (
+                              SELECT 1
+                              FROM public.files
+                              WHERE plain_name = new_name
+                                AND folder_id = outer_rec.folder_id
+                                AND user_id = outer_rec.user_id
+                                AND status = 'EXISTS'
+                          );
+
+                          -- If it is taken, try with the next one
+                          suffix := suffix + 1;
+                      END LOOP;
+
+                      -- Update the row with the new name
+                      UPDATE public.files
+                      SET plain_name = new_name
+                      WHERE id = inner_rec.id;
+
+                      renamed_count := renamed_count + 1; -- Count renamed items
+                      RAISE NOTICE 'Renamed plain_name from % to %', inner_rec.plain_name, new_name;
+                  END IF;
+
+                  -- Inc suffix for the next duplicate
+                  suffix := suffix + 1;
+              END LOOP;
+
+              RAISE NOTICE 'Total duplicates found: %, Total renamed: %', 
+                          total_duplicates, renamed_count;
+          END LOOP;
+
+          RAISE NOTICE 'Renaming completed. Total renamed: %', renamed_count;
+      END $$;
+    `,
+    );
+  },
+
+  async down(queryInterface, Sequelize) {
+    /**
+     * no op
+     */
+  },
+};

migrations/20241001120044-create-index-plainname-folderid-type-exists-unique-files.js

@@ -0,0 +1,20 @@
+'use strict';
+
+/** @type {import('sequelize-cli').Migration} */
+module.exports = {
+  async up(queryInterface, Sequelize) {
+    await queryInterface.sequelize.query(
+      `
+        CREATE UNIQUE INDEX CONCURRENTLY files_plainname_type_folderid_exists_unique 
+        ON files USING btree (plain_name, type, folder_id) 
+        WHERE (status = 'EXISTS');
+      `,
+    );
+  },
+
+  async down(queryInterface, Sequelize) {
+    await queryInterface.sequelize.query(
+      `DROP INDEX IF EXISTS files_plainname_type_folderid_exists_unique`,
+    );
+  },
+};