/* global context testDone:true */

function arraysHaveSameContent(arr1, arr2) {
  if (arr1.length != arr2.length) {
    return false;
  }
  return arr1.every(function (value, index) {
    return arr2[index] === value;
  });
}

function testHas() {
  var name = "caches-has" + context;
  return caches
    .has(name)
    .then(function (has) {
      ok(!has, name + " should not exist yet");
      return caches.open(name);
    })
    .then(function (c) {
      return caches.has(name);
    })
    .then(function (has) {
      ok(has, name + " should now exist");
      return caches.delete(name);
    })
    .then(function (deleted) {
      ok(deleted, "The deletion should finish successfully");
      return caches.has(name);
    })
    .then(function (has) {
      ok(!has, name + " should not exist any more");
    });
}

function testKeys() {
  var names = [
    // The names here are intentionally unsorted, to ensure the insertion order
    // and make sure we don't confuse it with an alphabetically sorted list.
    "caches-keys4" + context,
    "caches-keys0" + context,
    "caches-keys1" + context,
    "caches-keys3" + context,
  ];
  return caches
    .keys()
    .then(function (keys) {
      is(keys.length, 0, "No keys should exist yet");
      return Promise.all(
        names.map(function (name) {
          return caches.open(name);
        })
      );
    })
    .then(function () {
      return caches.keys();
    })
    .then(function (keys) {
      ok(
        arraysHaveSameContent(keys, names),
        "Keys must match in insertion order"
      );
      return Promise.all(
        names.map(function (name) {
          return caches.delete(name);
        })
      );
    })
    .then(function (deleted) {
      ok(
        arraysHaveSameContent(deleted, [true, true, true, true]),
        "All deletions must succeed"
      );
      return caches.keys();
    })
    .then(function (keys) {
      is(keys.length, 0, "No keys should exist any more");
    });
}

function testMatchAcrossCaches() {
  var tests = [
    // The names here are intentionally unsorted, to ensure the insertion order
    // and make sure we don't confuse it with an alphabetically sorted list.
    {
      name: "caches-xmatch5" + context,
      request: "//mochi.test:8888/?5" + context,
    },
    {
      name: "caches-xmatch2" + context,
      request:
        "//mochi.test:8888/tests/dom/cache/test/mochitest/test_caches.js?2" +
        context,
    },
    {
      name: "caches-xmatch4" + context,
      request: "//mochi.test:8888/?4" + context,
    },
  ];
  return Promise.all(
    tests.map(function (test) {
      return caches.open(test.name).then(function (c) {
        return c.add(test.request);
      });
    })
  )
    .then(function () {
      return caches.match("//mochi.test:8888/?5" + context, {
        ignoreSearch: true,
      });
    })
    .then(function (match) {
      ok(match.url.indexOf("?5") > 0, "Match should come from the first cache");
      return caches.delete("caches-xmatch2" + context); // This should not change anything!
    })
    .then(function (deleted) {
      ok(deleted, "Deletion should finish successfully");
      return caches.match("//mochi.test:8888/?" + context, {
        ignoreSearch: true,
      });
    })
    .then(function (match) {
      ok(
        match.url.indexOf("?5") > 0,
        "Match should still come from the first cache"
      );
      return caches.delete("caches-xmatch5" + context); // This should eliminate the first match!
    })
    .then(function (deleted) {
      ok(deleted, "Deletion should finish successfully");
      return caches.match("//mochi.test:8888/?" + context, {
        ignoreSearch: true,
      });
    })
    .then(function (match) {
      ok(match.url.indexOf("?4") > 0, "Match should come from the third cache");
      return caches.delete("caches-xmatch4" + context); // Game over!
    })
    .then(function (deleted) {
      ok(deleted, "Deletion should finish successfully");
      return caches.match("//mochi.test:8888/?" + context, {
        ignoreSearch: true,
      });
    })
    .then(function (match) {
      is(typeof match, "undefined", "No matches should be found");
    });
}

function testDelete() {
  return caches
    .delete("delete" + context)
    .then(function (deleted) {
      ok(!deleted, "Attempting to delete a non-existing cache should fail");
      return caches.open("delete" + context);
    })
    .then(function () {
      return caches.delete("delete" + context);
    })
    .then(function (deleted) {
      ok(deleted, "Delete should now succeed");
    });
}

testHas()
  .then(function () {
    return testKeys();
  })
  .then(function () {
    return testMatchAcrossCaches();
  })
  .then(function () {
    return testDelete();
  })
  .then(function () {
    testDone();
  });