//! Macro Demo - Demonstrates the macro recording system
//!
//! Press:
//! - R: Start/stop recording
//! - P: Play back recorded macro
//! - S: Save macro to file
//! - L: Load macro from file
//! - ESC: Quit
//!
//! Type any keys while recording to capture them.

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

const Framebuffer = zcatgui.render.Framebuffer;
const SoftwareRenderer = zcatgui.render.SoftwareRenderer;
const Sdl2Backend = zcatgui.backend.Sdl2Backend;
const MacroRecorder = zcatgui.MacroRecorder;
const MacroPlayer = zcatgui.MacroPlayer;
const Color = zcatgui.Color;
const Command = zcatgui.Command;
const KeyEvent = zcatgui.KeyEvent;

pub fn main() !void {
    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
    defer _ = gpa.deinit();
    const allocator = gpa.allocator();

    // Initialize backend
    var backend = try Sdl2Backend.init("zcatgui - Macro Demo", 800, 600);
    defer backend.deinit();

    // Create framebuffer
    var fb = try Framebuffer.init(allocator, 800, 600);
    defer fb.deinit();

    // Create renderer
    var renderer = SoftwareRenderer.init(&fb);

    // Create macro recorder
    var recorder = MacroRecorder.init(allocator);
    defer recorder.deinit();

    // State
    var running = true;
    var last_keys: [10]KeyEvent = undefined;
    var last_key_count: usize = 0;
    var status_message: []const u8 = "Press R to start recording";

    // Event injection function for playback
    const inject = struct {
        var injected_count: usize = 0;

        fn injectKey(key: KeyEvent) void {
            _ = key;
            injected_count += 1;
            std.debug.print("Injected key #{d}\n", .{injected_count});
        }
    }.injectKey;

    while (running) {
        // Poll events
        while (backend.pollEvent()) |event| {
            switch (event) {
                .quit => running = false,

                .key => |key| {
                    if (!key.pressed) continue;

                    // Record if recording
                    recorder.record(key);

                    // Store for display
                    if (last_key_count < last_keys.len) {
                        last_keys[last_key_count] = key;
                        last_key_count += 1;
                    } else {
                        // Shift left
                        for (0..last_keys.len - 1) |i| {
                            last_keys[i] = last_keys[i + 1];
                        }
                        last_keys[last_keys.len - 1] = key;
                    }

                    // Handle special keys
                    switch (key.key) {
                        .escape => running = false,

                        .r => {
                            if (recorder.isRecording()) {
                                _ = recorder.stop();
                                status_message = "Recording stopped";
                                std.debug.print("Stopped recording. {d} events captured.\n", .{recorder.eventCount()});
                            } else {
                                recorder.start();
                                status_message = "Recording...";
                                std.debug.print("Started recording.\n", .{});
                            }
                        },

                        .p => {
                            if (!recorder.isRecording() and recorder.eventCount() > 0) {
                                status_message = "Playing back...";
                                std.debug.print("Playing back {d} events.\n", .{recorder.eventCount()});
                                MacroPlayer.play(recorder.stop(), inject);
                                status_message = "Playback complete";
                            }
                        },

                        .s => {
                            if (recorder.eventCount() > 0) {
                                recorder.save("macro.zcm") catch |err| {
                                    std.debug.print("Save failed: {}\n", .{err});
                                };
                                status_message = "Saved to macro.zcm";
                                std.debug.print("Saved macro to macro.zcm\n", .{});
                            }
                        },

                        .l => {
                            recorder.load("macro.zcm") catch |err| {
                                std.debug.print("Load failed: {}\n", .{err});
                            };
                            status_message = "Loaded from macro.zcm";
                            std.debug.print("Loaded macro: {d} events\n", .{recorder.eventCount()});
                        },

                        else => {},
                    }
                },

                .resize => |size| {
                    try fb.resize(size.width, size.height);
                },

                else => {},
            }
        }

        // Clear
        renderer.clear(Color.background);

        // Draw title area
        renderer.execute(Command.rect(0, 0, fb.width, 50, Color.rgb(40, 40, 40)));

        // Draw status
        const status_color = if (recorder.isRecording()) Color.danger else Color.foreground;
        renderer.execute(Command.rect(10, 60, 200, 20, status_color));

        // Draw event count
        renderer.execute(Command.rect(10, 90, @intCast(recorder.eventCount() * 10), 20, Color.primary));

        // Draw last keys as blocks
        for (0..last_key_count) |i| {
            const x: i32 = @intCast(10 + i * 50);
            renderer.execute(Command.rect(x, 150, 40, 40, Color.secondary));
        }

        // Draw instructions area
        renderer.execute(Command.rect(10, 250, 400, 120, Color.rgb(35, 35, 35)));
        // Text would go here with a proper font

        // Recording indicator
        if (recorder.isRecording()) {
            renderer.execute(Command.rect(@as(i32, @intCast(fb.width)) - 30, 10, 20, 20, Color.danger));
        }

        // Present
        backend.present(&fb);

        // Cap at ~60 FPS
        std.Thread.sleep(16 * std.time.ns_per_ms);
    }

    std.debug.print("Final status: {s}\n", .{status_message});
}