const std = @import("std");
pub const bh = @import("bh");

pub const ModLib = bh.ModLib;
pub const MakeModLib = bh.MakeModLib;

const dependencyList = [_][]const u8{
    "p2",
    "tracy", // usually doesnt have C deps... unless we're compiled with it on, in which case we only support static builds
    "zmath",
    "packer", // packer no longer has C deps.
};

pub fn MakeEngineMod(b: *std.Build, name: []const u8) ModLib {
    const target = b.standardTargetOptions(.{});
    const optimize = b.standardOptimizeOption(.{});
    const static_build = b.option(bool, "static_build", "builds backlog dependencies for static linking") orelse false;

    const engineMod = MakeModLib(b, .{
        .name = name,
        .target = target,
        .optimize = optimize,
        .static_build = static_build,
    });

    return engineMod;
}

pub fn build(b: *std.Build) void {
    const target = b.standardTargetOptions(.{});
    const optimize = b.standardOptimizeOption(.{});
    const static_build = b.option(bool, "static_build", "builds backlog dependencies for static linking") orelse false;

    const engineMod = MakeModLib(b, .{
        .name = "core",
        .target = target,
        .optimize = optimize,
        .static_build = static_build,
    });

    engineMod.install();
    engineMod.linkModLibs(&dependencyList);

    const test_step = b.step("test", "run unit tests for core");
    const tests = b.addTest(.{
        .root_module = b.createModule(.{
            .target = target,
            .optimize = optimize,
            .root_source_file = b.path("tests/tests.zig"),
        }),
    });

    const sampleGameExtern = b.addLibrary(.{
        .root_module = b.createModule(.{
            .root_source_file = b.path("tests/externalModule.zig"),
            .link_libc = true,
            .optimize = optimize,
            .target = target,
        }),
        .linkage = .dynamic,
        .name = "external",
    });
    sampleGameExtern.root_module.addImport("core", engineMod.mod);

    const installExtern = b.addInstallArtifact(sampleGameExtern, .{
        .dest_dir = .{ .override = .{ .custom = "modules" } },
    });

    b.getInstallStep().dependOn(&installExtern.step);

    tests.root_module.addImport("core", engineMod.mod);
    const runArtifact = b.addRunArtifact(tests);
    test_step.dependOn(&runArtifact.step);
    runArtifact.step.dependOn(b.getInstallStep());
    b.installArtifact(tests);
}