const std = @import("std");
const builtin = @import("builtin");

const jsruntime = @import("jsruntime");
const generate = @import("generate.zig");

const parser = @import("netsurf.zig");
const DOM = @import("dom.zig");

const documentTestExecFn = @import("dom/document.zig").testExecFn;
const HTMLDocumentTestExecFn = @import("html/document.zig").testExecFn;
const nodeTestExecFn = @import("dom/node.zig").testExecFn;
const characterDataTestExecFn = @import("dom/character_data.zig").testExecFn;
const textTestExecFn = @import("dom/text.zig").testExecFn;
const elementTestExecFn = @import("dom/element.zig").testExecFn;
const HTMLCollectionTestExecFn = @import("dom/html_collection.zig").testExecFn;
const DOMExceptionTestExecFn = @import("dom/exceptions.zig").testExecFn;
const DOMImplementationExecFn = @import("dom/implementation.zig").testExecFn;
const NamedNodeMapExecFn = @import("dom/namednodemap.zig").testExecFn;
const DOMTokenListExecFn = @import("dom/token_list.zig").testExecFn;
const NodeListTestExecFn = @import("dom/nodelist.zig").testExecFn;
const AttrTestExecFn = @import("dom/attribute.zig").testExecFn;

pub const Types = jsruntime.reflect(DOM.Interfaces);

var doc: *parser.DocumentHTML = undefined;

fn testExecFn(
    alloc: std.mem.Allocator,
    js_env: *jsruntime.Env,
    comptime execFn: jsruntime.ContextExecFn,
) anyerror!void {

    // start JS env
    try js_env.start(alloc);
    defer js_env.stop();

    // alias global as self and window
    try js_env.attachObject(try js_env.getGlobal(), "self", null);
    try js_env.attachObject(try js_env.getGlobal(), "window", null);

    // document
    const file = try std.fs.cwd().openFile("test.html", .{});
    defer file.close();

    doc = try parser.documentHTMLParse(file.reader());
    defer parser.documentHTMLClose(doc) catch |err| {
        std.debug.print("documentHTMLClose error: {s}\n", .{@errorName(err)});
    };

    // add document object
    try js_env.addObject(doc, "document");

    // run test
    try execFn(alloc, js_env);
}

fn testsAllExecFn(
    alloc: std.mem.Allocator,
    js_env: *jsruntime.Env,
) anyerror!void {
    const testFns = [_]jsruntime.ContextExecFn{
        documentTestExecFn,
        HTMLDocumentTestExecFn,
        nodeTestExecFn,
        characterDataTestExecFn,
        textTestExecFn,
        elementTestExecFn,
        HTMLCollectionTestExecFn,
        DOMExceptionTestExecFn,
        DOMImplementationExecFn,
        NamedNodeMapExecFn,
        DOMTokenListExecFn,
        NodeListTestExecFn,
        AttrTestExecFn,
    };

    inline for (testFns) |testFn| {
        try testExecFn(alloc, js_env, testFn);
    }
}

pub fn main() !void {
    std.debug.print("\n", .{});
    for (builtin.test_functions) |test_fn| {
        try test_fn.func();
        std.debug.print("{s}\tOK\n", .{test_fn.name});
    }
}

test "jsruntime" {
    // generate tests
    try generate.tests();

    // create JS vm
    const vm = jsruntime.VM.init();
    defer vm.deinit();

    var bench_alloc = jsruntime.bench_allocator(std.testing.allocator);
    var arena_alloc = std.heap.ArenaAllocator.init(bench_alloc.allocator());
    defer arena_alloc.deinit();

    try jsruntime.loadEnv(&arena_alloc, testsAllExecFn);
}

test "DocumentHTMLParseFromStr" {
    const file = try std.fs.cwd().openFile("test.html", .{});
    defer file.close();

    const str = try file.readToEndAlloc(std.testing.allocator, std.math.maxInt(u32));
    defer std.testing.allocator.free(str);

    doc = try parser.documentHTMLParseFromStr(str);
    parser.documentHTMLClose(doc) catch {};
}