var ot = require('../ot'),
sync = require('../sync');

function createTarget()
{
    return {"foo" : [{"id" : 0}, {"id" : 1}, {"id" : 5}, {"id" : 6}],
	    "bar" : {"objects" : [{"id" : 8,
				   "name" : "saikat",
				   "children" : ["sheena", "divia", "kami", {"id" : 5}],
				   "otherObjects" : [{"id" : 100}, {"id" : "testID"}]},
				  {"id" : 9,
				   "name" : "mockingbird",
				   "children" : ["hatchling1", "hatchling2", "hatchling3", {"id" : 50}]},
				  {"id" : 10,
				   "name" : "hullo",
				   "children" : [{"id" : 100}, {"id" : "testID"}, {"id" : "innerArray", "objects" : [{"id" : 100}]}]}]}};
}

var testDiffs = [
    // transform['create']['create']
    [sync.created(["foo", 3], 10),
     sync.created(["bar", "objects", 2], 20)],

    [sync.created(["bar", "objects", 1], 20),
     sync.created(["bar", "objects", {"id" : 9}, "children", 0], "hatchling0")],

    [sync.created(["bar", "objects", {"id" : 8}, "children", 1], "test"),
     sync.created(["bar", "objects", {"id" : 8}, "children", 2], "test1")],

    [sync.created(["bar", "objects", {"id" : 9}, "children", 1], "test"),
     sync.created(["bar", "objects", {"id" : 9}, "children", 1], "test1")],

    [sync.created(["bar", "objects", 2], "test"),
     sync.created(["bar", "objects", 1], "test1")],

    [sync.created(["foo", 3], 10),
     sync.removed(["bar", "objects", {"id" : 8, "index" : 0}])],

    // transform['create']['remove']
    [sync.created(["bar", "objects", 1], 10),
     sync.removed(["bar", "objects", {"id" : 8, "index" : 0}])],

    [sync.created(["bar", "objects", 1], 10),
     sync.removed(["bar", "objects", {"id" : 9, "index" : 1}])],

    [sync.created(["bar", "objects", {"id" : 8}, "children", 2], "test"),
     sync.removed(["bar", "objects", {"id" : 8, "index" : 0}]),
     'noop'],

    [sync.created(["bar", "objects", {"id" : 8}, "children", 2], "test"),
     sync.removed(["bar", "objects", {"id" : 9, "index" : 1}])],

    [sync.created(["bar", "objects", {"id" : 8}, "children", 2], "test"),
     sync.removed(["bar", "objects", {"id" : 8}, "otherObjects", {"id" : 100, "index" : 0}])],

    [sync.created(["bar", "objects", 2], "test"),
     sync.removed(["bar", "objects", {"id" : 8}, "children", {"id" : 5, "index" : 3}])],

    // transform['create']['edit']
    [sync.created(["foo", 3], 8),
     sync.edited(["bar", "objects", {"id" : 8}, "name"], "supratik")],

    [sync.created(["bar", "objects", 0], "testValue"),
     sync.edited(["bar", "objects", {"id" : 9}, "name"],  "macawkingbird")],

    [sync.created(["bar", "objects", {"id" : 8}, "otherObjects", 1], "testValue"),
     sync.edited(["bar", "objects", {"id" : 8}, "name"], "macawkingbird")],

    // transform['create']['move']

    // path1 <> path2, path1 <> movedPath - both unchanged
    [sync.created(["foo", 3], 8),
     sync.moved(["bar", "objects", {"id" : 8, "index" : 0}],
		["bar", "objects", {"id" : 9}, "children", 1])],

    // path1 in path2, path1 <> movedPath - both unchanged
    [sync.created(["bar", "objects", 1], "test"),
     sync.moved(["bar", "objects", {"id" : 8}, "children", {"id" : 5, "index" : 3}],
		["foo", 3])],

    // path2 in path 1, path1 <> movedPath - need to move the original diff to follow path2
    [sync.created(["bar", "objects", {"id" : 8}, "children", 2], "test"),
     sync.moved(["bar", "objects", {"id" : 8, "index" : 0}],
		["foo", 3])],

    // path1 = path2, path1 <> movedPath - depends on the position of the moved object
    [sync.created(["bar", "objects", 1], "test"),
     sync.moved(["bar", "objects", {"id" : 8, "index" : 0}],
 		["foo", 3])],

    [sync.created(["bar", "objects", 1], "test"),
     sync.moved(["bar", "objects", {"id" : 9, "index" : 1}],
		["foo", 3])],

    [sync.created(["bar", "objects", 1], "test"),
     sync.moved(["bar", "objects", {"id" : 10, "index" : 2}],
		["foo", 3])],

    // path1 <> path2, path1 in movedPath - both unchanged
    [sync.created(["bar", "objects", 1], "test"),
     sync.moved(["foo", {"id" : 5, "index" : 2}],
		["bar", "objects", {"id" : 9}, "children", 2])],
]

var tests = {};

function make_test(index) {
    return function(assert) {
	var diff1 = testDiffs[index][0][0],
	diff2 = testDiffs[index][1][0],
	newDiffs = ot.transform(diff1, diff2);

	if (testDiffs[index][2] == 'noop')
	    assert.equal(newDiffs.diff1[0].action, 'noop');
	else
	    assert.notEqual(newDiffs.diff1[0].action, 'noop');

	if (testDiffs[index][3] == 'noop')
	    assert.equal(newDiffs.diff2[0].action, 'noop');
	else
	    assert.notEqual(newDiffs.diff2[0].action, 'noop');

	var target1 = createTarget(),
	target2 = createTarget();

	var diffsToApply = [diff1].concat(newDiffs.diff2),
	appliedCommands = applyCommands(target1, diffsToApply),
	shouldHaveApplied = [];
	assert.equal(appliedCommands.errors.length, 0);
	for (var i = 0; i < diffsToApply.length; ++i)
	    if (diffsToApply[i].action !== 'noop')
		shouldHaveApplied.push(diffsToApply[i]);

	assert.deepEqual(appliedCommands.appliedCommands, shouldHaveApplied);

	diffsToApply = [diff2].concat(newDiffs.diff1);
 	appliedCommands = sync.applyCommands(target2, diffsToApply),
	shouldHaveApplied = [];

	assert.equal(appliedCommands.errors.length, 0);
	for (var i = 0; i < diffsToApply.length; ++i)
	    if (diffsToApply[i].action !== 'noop')
		shouldHaveApplied.push(diffsToApply[i]);

	assert.deepEqual(appliedCommands.appliedCommands, shouldHaveApplied);

	assert.deepEqual(target1, target2);
    };
}

var testCount = testDiffs.length;
for (var i = 0; i < testCount; ++i) {
    tests[i] = make_test(i);
}

module.exports = tests;