build.zig

const std = @import("std");

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

    const zero = b.dependency("zero", .{});
    const bearssl = b.dependency("zig_bearssl", .{});

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

    mod.addImport("zero", zero.module("zero"));
    mod.addImport("bearssl", bearssl.module("bearssl"));

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

    b.installArtifact(exe);

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

    // Tests: a SEPARATE module rooted at src/root.zig (which contains a
    // `comptime { _ = ... }` block that forces test discovery). The test
    // module imports the same dependencies as the main module. This
    // mirrors the pattern in zero/src/tests.zig and zero/build.zig.
    const test_module = b.createModule(.{
        .root_source_file = b.path("src/root.zig"),
        .target = target,
        .optimize = optimize,
    });
    test_module.addImport("zero", zero.module("zero"));
    test_module.addImport("bearssl", bearssl.module("bearssl"));

    const mod_tests = b.addTest(.{ .root_module = test_module, .use_llvm = true });
    const run_mod_tests = b.addRunArtifact(mod_tests);

    const test_step = b.step("test", "Run tests");

    // `-Dcoverage` mirrors zero's build.zig: wraps the test run with kcov
    // and writes `zig-out/kcov/test/coverage.json` for the CI badge step.
    const coverage = b.option(bool, "coverage", "enable code coverage using kcov") orelse false;
    if (coverage) {
        const mkdir_kcov = b.addSystemCommand(&.{ "mkdir", "-p", "zig-out/kcov" });
        const run_kcov = b.addSystemCommand(&.{
            "kcov",
            "--clean",
            "--include-path=src/",
            "zig-out/kcov",
        });
        run_kcov.addArtifactArg(mod_tests);
        run_kcov.step.dependOn(&mkdir_kcov.step);

        test_step.dependOn(&run_mod_tests.step);
        test_step.dependOn(&run_kcov.step);
    } else {
        test_step.dependOn(&run_mod_tests.step);
    }

    const test_https = b.addExecutable(.{
        .name = "test_https",
        .root_module = b.createModule(.{
            .root_source_file = b.path("test_https.zig"),
            .target = target,
            .optimize = optimize,
            .imports = &.{
                .{ .name = "bearssl", .module = bearssl.module("bearssl") },
            },
        }),
    });
    const run_test_https = b.addRunArtifact(test_https);
    b.step("test-https", "Test HTTPS Telegram message").dependOn(&run_test_https.step);
}