// db/photos.js
const knex = require('./knex');

async function insertOrUpdatePhoto(row) {
  // row deve contenere almeno id, user, cartella, name, path, thumb1, thumb2, fast_hash, mtimeMs, etc.
  const exists = await knex('photos').where({ id: row.id }).first();
  if (!exists) {
    await knex('photos').insert({
      id: row.id,
      user: row.user,
      cartella: row.cartella,
      name: row.name,
      path: row.path,
      thumb1: row.thumb1 || null,
      thumb2: row.thumb2 || null,
      mime_type: row.mime_type || null,
      width: row.width || null,
      height: row.height || null,
      rotation: row.rotation || null,
      size_bytes: row.size_bytes || null,
      mtimeMs: row.mtimeMs || null,
      taken_at: row.taken_at || null,
      fast_hash: row.fast_hash || null,
      created_at: knex.fn.now(),
      updated_at: knex.fn.now()
    });
  } else {
    await knex('photos').where({ id: row.id }).update({
      path: row.path,
      thumb1: row.thumb1 || exists.thumb1,
      thumb2: row.thumb2 || exists.thumb2,
      mime_type: row.mime_type || exists.mime_type,
      width: row.width || exists.width,
      height: row.height || exists.height,
      rotation: row.rotation || exists.rotation,
      size_bytes: row.size_bytes || exists.size_bytes,
      mtimeMs: row.mtimeMs || exists.mtimeMs,
      taken_at: row.taken_at || exists.taken_at,
      fast_hash: row.fast_hash || exists.fast_hash,
      updated_at: knex.fn.now(),
      deleted_at: null
    });
  }
}

async function markPhotoDeletedHard(id, user) {
  await knex('photos').where({ id, user }).del();
  await knex('deleted_hard').insert({ id, user, deleted_at: knex.fn.now() }).catch(() => {});
}

async function getPhotosSince(user, sinceIso, limit = 1000) {
  // ritorna foto aggiornate dopo sinceIso (ISO string)
  return knex('photos')
    .where({ user })
    .andWhere('updated_at', '>', sinceIso)
    .orderBy('updated_at', 'asc')
    .limit(limit)
    .select('*');
}

async function getDeletedHardSince(user, sinceIso) {
  return knex('deleted_hard')
    .where({ user })
    .andWhere('deleted_at', '>', sinceIso)
    .select('id', 'deleted_at');
}

module.exports = {
  insertOrUpdatePhoto,
  markPhotoDeletedHard,
  getPhotosSince,
  getDeletedHardSince
};