"use strict";

const fs = require("fs"),
  Promise = require("bluebird"),
  config = require("config");

if (process.argv.length <= 2) {
  console.log("usage: node check file|id [file|id] ... ");
  process.exit(-1);
}
const items = process.argv.splice(2);

const picturesPath = config.get("picturesPath").replace(/\/$/, "");

for (let i = 0; i < items.length; i++) {
  if (parseInt(items[i]) == items[i]) {
    items[i] = {
      type: "id",
      value: items[i]
    };
  } else {
    items[i] = {
      type: "file",
      value: items[i]
    }
  }
}

const exists = function(path) {
  return stat(path).then(function() {
    return true;
  }).catch(function() {
    return false;
  });
}

const stat = function (_path) {
  if (_path.indexOf(picturesPath.replace(/\/$/, "")) == 0) {
    _path = _path.substring(picturesPath.length);
  }

  let path = picturesPath + _path;

  return new Promise(function (resolve, reject) {
    fs.stat(path, function (error, stats) {
      if (error) {
        return reject(error);
      }
      return resolve(stats);
    });
  });
}

require("../server/db/photos").then(function(db) {
  const photoDB = db;
  return Promise.mapSeries(items, function(item) {
    switch (item.type) {
    case "file":
      return exists(item.value).then(function(exists) {
        console.log("File '" + item.value + "' " + (exists ? "exists" : "does not exist."));
      });
    case "id":
      return photoDB.sequelize.query("SELECT * FROM photos WHERE id=:id", {
        replacements: {
          id: item.value
        },
        type: photoDB.Sequelize.QueryTypes.SELECT,
        raw: true
      }).then(function(photos) {
        if (photos.length == 0) {
          console.log("Item " + item.value + " does not exist.");
        } else {
          console.log("Item " + item.value + " exists:", photos[0]);
        }
      });
    }
  });
});