const std = @import("std");

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

    const mod = b.addModule("wasm_runtime", .{
        .root_source_file = b.path("src/root.zig"),
        .target = target,
    });

    const exe = b.addExecutable(.{
        .name = "wasm_runtime",
        .root_module = b.createModule(.{
            .root_source_file = b.path("src/main.zig"),
            .target = target,
            .optimize = optimize,
            .imports = &.{
                .{ .name = "wasm_runtime", .module = mod },
            },
        }),
    });
    b.installArtifact(exe);

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

    const lib_tests = b.addTest(.{
        .root_module = b.createModule(.{
            .root_source_file = b.path("src/root.zig"),
            .target = target,
            .optimize = optimize,
        }),
    });
    const run_lib_tests = b.addRunArtifact(lib_tests);

    const binary_tests = b.addTest(.{
        .root_module = b.createModule(.{
            .root_source_file = b.path("src/wasm/binary.zig"),
            .target = target,
            .optimize = optimize,
        }),
    });
    const run_binary_tests = b.addRunArtifact(binary_tests);

    const validator_tests = b.addTest(.{
        .root_module = b.createModule(.{
            .root_source_file = b.path("src/wasm/validator.zig"),
            .target = target,
            .optimize = optimize,
        }),
    });
    const run_validator_tests = b.addRunArtifact(validator_tests);

    const runtime_tests = b.addTest(.{
        .root_module = b.createModule(.{
            .root_source_file = b.path("src/wasm/runtime.zig"),
            .target = target,
            .optimize = optimize,
        }),
    });
    const run_runtime_tests = b.addRunArtifact(runtime_tests);

    const instance_tests = b.addTest(.{
        .root_module = b.createModule(.{
            .root_source_file = b.path("src/wasm/instance.zig"),
            .target = target,
            .optimize = optimize,
        }),
    });
    const run_instance_tests = b.addRunArtifact(instance_tests);

    const host_tests = b.addTest(.{
        .root_module = b.createModule(.{
            .root_source_file = b.path("src/wasm/host.zig"),
            .target = target,
            .optimize = optimize,
        }),
    });
    const run_host_tests = b.addRunArtifact(host_tests);

    const jit_tests = b.addTest(.{
        .root_module = b.createModule(.{
            .root_source_file = b.path("src/wasm/jit_tests.zig"),
            .target = target,
            .optimize = optimize,
        }),
    });
    const run_jit_tests = b.addRunArtifact(jit_tests);

    const test_step = b.step("test", "Run all tests");
    test_step.dependOn(&run_lib_tests.step);
    test_step.dependOn(&run_binary_tests.step);
    test_step.dependOn(&run_validator_tests.step);
    test_step.dependOn(&run_runtime_tests.step);
    test_step.dependOn(&run_instance_tests.step);
    test_step.dependOn(&run_host_tests.step);
    test_step.dependOn(&run_jit_tests.step);
}