const std = @import("std");
const Allocator = std.mem.Allocator;
const builtin = @import("builtin");
const build_config = @import("../build_config.zig");
const xev = @import("xev");
const renderer = @import("../renderer.zig");
const args = @import("args.zig");
const Action = @import("action.zig").Action;

pub const Options = struct {
    pub fn deinit(self: Options) void {
        _ = self;
    }

    /// Enables "-h" and "--help" to work.
    pub fn help(self: Options) !void {
        _ = self;
        return Action.help_error;
    }
};

/// The `version` command is used to display information
/// about Ghostty.
pub fn run(alloc: Allocator) !u8 {
    var opts: Options = .{};
    defer opts.deinit();

    {
        var iter = try std.process.argsWithAllocator(alloc);
        defer iter.deinit();
        try args.parse(Options, alloc, &opts, &iter);
    }

    const stdout = std.io.getStdOut().writer();
    try stdout.print("Ghostty {s}\n\n", .{build_config.version_string});
    try stdout.print("Build Config\n", .{});
    try stdout.print("  - build mode : {}\n", .{builtin.mode});
    try stdout.print("  - app runtime: {}\n", .{build_config.app_runtime});
    try stdout.print("  - font engine: {}\n", .{build_config.font_backend});
    try stdout.print("  - renderer   : {}\n", .{renderer.Renderer});
    try stdout.print("  - libxev     : {}\n", .{xev.backend});
    return 0;
}