const std = @import("std");

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

    // Get libdeflate dependency
    const libdeflate_dep = b.dependency("libdeflate", .{
        .target = target,
        .optimize = optimize,
    });
    const libdeflate_lib = libdeflate_dep.artifact("deflate");

    // zpdf module with libdeflate
    const zpdf_mod = b.createModule(.{
        .root_source_file = b.path("src/root.zig"),
        .target = target,
        .optimize = optimize,
    });
    zpdf_mod.linkLibrary(libdeflate_lib);

    // Tests
    const unit_tests = b.addTest(.{
        .root_module = b.createModule(.{
            .root_source_file = b.path("src/root.zig"),
            .target = target,
            .optimize = optimize,
        }),
    });
    unit_tests.root_module.linkLibrary(libdeflate_lib);

    const run_unit_tests = b.addRunArtifact(unit_tests);
    const test_step = b.step("test", "Run unit tests");
    test_step.dependOn(&run_unit_tests.step);

    // Example executables
    const examples = [_]struct { name: []const u8, path: []const u8, step_name: []const u8, desc: []const u8 }{
        .{ .name = "hello", .path = "examples/hello.zig", .step_name = "hello", .desc = "Run hello example" },
        .{ .name = "invoice", .path = "examples/invoice.zig", .step_name = "invoice", .desc = "Run invoice example" },
        .{ .name = "text_demo", .path = "examples/text_demo.zig", .step_name = "text_demo", .desc = "Run text demo example" },
        .{ .name = "image_demo", .path = "examples/image_demo.zig", .step_name = "image_demo", .desc = "Run image demo example" },
        .{ .name = "table_demo", .path = "examples/table_demo.zig", .step_name = "table_demo", .desc = "Run table demo example" },
        .{ .name = "pagination_demo", .path = "examples/pagination_demo.zig", .step_name = "pagination_demo", .desc = "Run pagination demo example" },
        .{ .name = "links_demo", .path = "examples/links_demo.zig", .step_name = "links_demo", .desc = "Run links demo example" },
        .{ .name = "bookmarks_demo", .path = "examples/bookmarks_demo.zig", .step_name = "bookmarks_demo", .desc = "Run bookmarks demo example" },
        .{ .name = "curves_demo", .path = "examples/curves_demo.zig", .step_name = "curves_demo", .desc = "Run curves demo example" },
        .{ .name = "transforms_demo", .path = "examples/transforms_demo.zig", .step_name = "transforms_demo", .desc = "Run transforms demo example" },
        .{ .name = "transparency_demo", .path = "examples/transparency_demo.zig", .step_name = "transparency_demo", .desc = "Run transparency demo example" },
        .{ .name = "gradient_demo", .path = "examples/gradient_demo.zig", .step_name = "gradient_demo", .desc = "Run gradient demo example" },
        .{ .name = "barcode_demo", .path = "examples/barcode_demo.zig", .step_name = "barcode_demo", .desc = "Run barcode demo example" },
        .{ .name = "ttf_demo", .path = "examples/ttf_demo.zig", .step_name = "ttf_demo", .desc = "Run TTF font demo example" },
        .{ .name = "template_demo", .path = "examples/template_demo.zig", .step_name = "template_demo", .desc = "Run template demo example" },
        .{ .name = "markdown_demo", .path = "examples/markdown_demo.zig", .step_name = "markdown_demo", .desc = "Run markdown demo example" },
    };

    inline for (examples) |example| {
        const exe = b.addExecutable(.{
            .name = example.name,
            .root_module = b.createModule(.{
                .root_source_file = b.path(example.path),
                .target = target,
                .optimize = optimize,
                .imports = &.{
                    .{ .name = "zpdf", .module = zpdf_mod },
                },
            }),
        });
        b.installArtifact(exe);

        const run_cmd = b.addRunArtifact(exe);
        run_cmd.step.dependOn(b.getInstallStep());
        const run_step = b.step(example.step_name, example.desc);
        run_step.dependOn(&run_cmd.step);
    }
}