const std = @import("std");

// number of days available
const days = 25;

pub fn build(b: *std.build.Builder) void {
    // Standard target options allows the person running `zig build` to choose
    // what target to build for. Here we do not override the defaults, which
    // means any target is allowed, and the default is native. Other options
    // for restricting supported target set are available.
    const target = b.standardTargetOptions(.{});

    // Standard release options allow the person running `zig build` to select
    // between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall.
    const mode = b.standardReleaseOptions();

    const bench = b.step("bench", "Run benchmark");

    var day: u8 = 1;
    while (day <= days) : (day += 1) {
        for ("ab") |part| {
            if (day == 25 and part == 'b') continue; // There is no 25b

            const dayString = b.fmt("day{:0>2}{c}", .{ day, part });
            const zigFile = b.fmt("src/{s}.zig", .{dayString});

            const exe = b.addExecutable(dayString, zigFile);
            exe.setTarget(target);
            exe.setBuildMode(mode);
            exe.install();

            const run_cmd = exe.run();
            // run_cmd.step.dependOn(b.getInstallStep());
            if (b.args) |args| {
                run_cmd.addArgs(args);
            }

            const run_day = b.step(dayString, "");
            run_day.dependOn(&run_cmd.step);

            bench.dependOn(&run_cmd.step);
        }
    }

    const exe = b.addExecutable("aoc2021", "src/main.zig");
    exe.setTarget(target);
    exe.setBuildMode(mode);
    // exe.install();

    const run_cmd = exe.run();
    // run_cmd.step.dependOn(b.getInstallStep());
    if (b.args) |args| {
        run_cmd.addArgs(args);
    }

    const run_step = b.step("run", "Run all solver");
    run_step.dependOn(&run_cmd.step);

    bench.dependOn(&run_cmd.step);

    const exe_tests = b.addTest("src/main_test.zig");
    exe_tests.setTarget(target);
    exe_tests.setBuildMode(mode);

    const test_step = b.step("test", "Run unit tests");
    test_step.dependOn(&exe_tests.step);
}