const std = @import("std");

pub fn build(b: *std.Build) void {
    const target = b.standardTargetOptions(.{});
    const optimize = b.standardOptimizeOption(.{});

    // Module
    const exe_mod = b.createModule(.{
        .root_source_file = b.path("src/main.zig"),
        .target = target,
        .optimize = optimize,
    });

    // Executable
    const exe = b.addExecutable(.{
        .name = "manwhere",
        .root_module = exe_mod,
    });
    b.installArtifact(exe);

    // Run step
    const run_cmd = b.addRunArtifact(exe);
    if (b.args) |args| run_cmd.addArgs(args);
    const run_step = b.step("run", "Run the app");
    run_step.dependOn(&run_cmd.step);

    // Test step
    const unit_tests = b.addTest(.{
        .root_module = exe_mod,
    });
    const run_unit_tests = b.addRunArtifact(unit_tests);
    const test_step = b.step("test", "Run unit tests");
    test_step.dependOn(&run_unit_tests.step);

    // Check step
    const check_exe = b.addExecutable(.{
        .name = "check-compile",
        .root_module = exe_mod,
    });
    const check_step = b.step("check", "Check compilation");
    check_step.dependOn(&check_exe.step);

    // Format step
    const fmt_step = b.step("fmt", "Format source code");
    const fmt_cmd = b.addFmt(.{
        .paths = &.{ "src", "build.zig" },
        .check = false,
    });
    fmt_step.dependOn(&fmt_cmd.step);

    // Clean step
    const clean_step = b.step("clean", "Remove build artifacts");
    const clean_cmd = b.addSystemCommand(&.{
        "rm", "-rf", ".zig-cache", "zig-out",
    });
    clean_step.dependOn(&clean_cmd.step);

    // Release step
    const release_step = b.step("release", "Build and install to ~/.local/bin");

    const release_mod = b.createModule(.{
        .root_source_file = b.path("src/main.zig"),
        .target = target,
        .optimize = .ReleaseFast,
    });
    const release_exe = b.addExecutable(.{
        .name = "manwhere",
        .root_module = release_mod,
    });

    // Get install path
    const home = std.process.getEnvVarOwned(b.allocator, "HOME") catch {
        std.debug.print("Error: HOME not set\n", .{});
        return;
    };
    defer b.allocator.free(home);

    const bin_path = b.pathJoin(&.{ home, ".local", "bin" });

    // Create directory
    const mkdir_cmd = b.addSystemCommand(&.{ "mkdir", "-p", bin_path });

    // Install the binary
    const install_bin = b.addInstallBinFile(release_exe.getEmittedBin(), "manwhere");
    install_bin.step.dependOn(&mkdir_cmd.step);

    release_step.dependOn(&install_bin.step);
}