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// Copyright 2025 Shota FUJI
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// SPDX-License-Identifier: Apache-2.0

//! This file defines how `zig build` command behaves.
//! Run `zig build --help` for available subcommands and options.
//!
//! Learn more at
//! https://ziglang.org/learn/build-system/

const std = @import("std");

const RoonExtension = struct {
    id: []const u8,
    name: []const u8,
    version: []const u8,
};

const ModuleOptions = struct {
    freelog: bool,
    extension: RoonExtension,
};

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

    const opts = ModuleOptions{
        .freelog = b.option(bool, "freelog", "Enable logging memory releases") orelse false,
        .extension = .{
            .id = b.option([]const u8, "extension-id", "Roon extension ID") orelse "jp.pocka.plac",
            .name = b.option([]const u8, "extension-name", "Roon extension name") orelse "Plac",
            .version = b.option([]const u8, "extension-version", "Roon extension version") orelse "0.0.0-dev",
        },
    };

    // Zig module
    {
        const mod = b.addModule("core", .{
            .root_source_file = b.path("src/main.zig"),
        });

        setupModule(b, mod, opts);
    }

    // Test
    {
        const t = b.addTest(.{
            .root_source_file = b.path("src/main.zig"),
            .target = target,
            .optimize = optimize,
        });

        const run = b.addRunArtifact(t);

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

    // Static library for GLib
    {
        const linkage = b.option(
            std.builtin.LinkMode,
            "linkage",
            "Link mode of the generated library file",
        ) orelse .static;

        const lib = b.addLibrary(.{
            .name = "plac_glib",
            .linkage = linkage,
            .root_module = b.createModule(.{
                .root_source_file = b.path("src/main.glib.zig"),
                .target = target,
                .optimize = optimize,
            }),
        });

        setupModule(b, lib.root_module, opts);

        lib.linkLibC();
        lib.linkSystemLibrary2("glib-2.0", .{ .preferred_link_mode = .dynamic });
        lib.installHeader(b.path("src/plac.h"), "plac.h");
        lib.installHeader(b.path("src/plac.vapi"), "plac.vapi");

        b.installArtifact(lib);

        const artifact = b.addInstallArtifact(lib, .{});

        const step = b.step("glib", "Build library for GLib application");
        step.dependOn(&artifact.step);

        b.default_step.dependOn(step);
    }
}

fn setupModule(b: *std.Build, mod: *std.Build.Module, opts: ModuleOptions) void {
    const sood = sood: {
        const dep = b.dependency("sood", .{});

        break :sood dep.module("sood");
    };

    const moo = moo: {
        const dep = b.dependency("libmoo", .{});

        break :moo dep.module("moo");
    };

    const websocket = websocket: {
        const dep = b.dependency("websocket", .{});

        break :websocket dep.module("websocket");
    };

    mod.addImport("sood", sood);
    mod.addImport("moo", moo);
    mod.addImport("websocket", websocket);

    const options = b.addOptions();
    options.addOption(bool, "freelog", opts.freelog);
    options.addOption(RoonExtension, "extension", opts.extension);

    mod.addOptions("config", options);
}