/*
Compare tabs in dual display mode (requires DOpus version >=11.0.9)
By default only file name is compared and differences are selected.
Use these arguments to change script behaviour:
SIZE - compare file size
CREATE - compare creation time
MODIFY - compare modification time
INVERT - select files that are same
*/

function OnInit(data) {
    var cmd = data.AddCommand();
    data.version = "v0.2";
    cmd.name = "CompareTabs";
    cmd.method = "OnCompareTabs";
    cmd.label = data.name = "Compare Tabs";
    cmd.desc = data.desc = "Compare tabs in dual display mode.";
    cmd.template = "SIZE/S,CREATE/S,MODIFY/S,INVERT/S";
    data.default_enable = true;
    return false;
}

function OnCompareTabs(data) {
    if (!data.func.desttab) return; // do nothing if not in dual panel mode

    var src = {}, dst = {}, srcdup = {}, dstdup = {};

    // add all files from source tab to src array
    var srcEnum = new Enumerator(data.func.sourcetab.files);
    while (!srcEnum.atEnd()) {
        var item = srcEnum.item();
        src[item.name] = item;
        srcEnum.moveNext();
    }

    // add different files from destination tab to dst array and others to dstdup array
    var dstEnum = new Enumerator(data.func.desttab.files);
    while (!dstEnum.atEnd()) {
        item = dstEnum.item();
        var isDuplicate = item.name in src;
        if (isDuplicate && data.func.args.got_arg.size) isDuplicate = src[item.name].size - item.size == 0;
        if (isDuplicate && data.func.args.got_arg.create) isDuplicate = src[item.name].create - item.create == 0;
        if (isDuplicate && data.func.args.got_arg.modify) isDuplicate = src[item.name].modify - item.modify == 0;
        if (isDuplicate) dstdup[item.name] = item;
        else dst[item.name] = item;
        dstEnum.moveNext();
    }
    
    // move duplicates from src array to srcdup array
    for (var k in src) if (k in dstdup) {
        srcdup[k] = src[k];
        delete src[k];
    }
    
    // add files from src or srcdup to select command depending on INVERT argument
    data.func.command.ClearFiles();
    if (data.func.args.got_arg.invert) for (k in srcdup) data.func.command.AddFile(srcdup[k]);
    else for (k in src) data.func.command.AddFile(src[k]);
    data.func.command.RunCommand("Select FROMSCRIPT DESELECTNOMATCH");

    // add files from dst or dstdup to select command depending on INVERT argument
    data.func.command.SetSourceTab(data.func.desttab);
    data.func.command.ClearFiles();
    if (data.func.args.got_arg.invert) for (k in dstdup) data.func.command.AddFile(dstdup[k]);
    else for (k in dst) data.func.command.AddFile(dst[k]);
    data.func.command.RunCommand("Select FROMSCRIPT DESELECTNOMATCH");
}