use cfg_aliases::cfg_aliases;

fn main() {
    // Shared code selects behaviour by capability, never by naming a mobile
    // operating system. A new platform joins these groups here (and in the
    // core's build.rs) instead of editing call sites. See platform/README.md.
    cfg_aliases! {
        mobile: { any(target_os = "android", target_os = "ios", target_env = "ohos") },
        desktop: { not(mobile) },
        // OpenHarmony reports target_os = "linux" without a desktop session,
        // portals, X11 or a Secret Service.
        linux_desktop: { all(desktop, target_os = "linux", not(target_env = "ohos")) },
        glibc: { all(target_os = "linux", target_env = "gnu") },
    }

    if std::env::var("CARGO_CFG_TARGET_OS").as_deref() == Ok("ios") {
        cc::Build::new()
            .file("platform/ios/Documents.m")
            .file("platform/ios/PdfPreview.m")
            .file("platform/ios/AppIcon.m")
            .file("platform/ios/WebAuthentication.m")
            .file("platform/ios/MemoryPressure.m")
            .flag("-fobjc-arc")
            .compile("flectar_documents");
        println!("cargo:rustc-link-lib=framework=UIKit");
        println!("cargo:rustc-link-lib=framework=Foundation");
        println!("cargo:rustc-link-lib=framework=AuthenticationServices");
        // iOS gives the main thread a 1 MB stack, and Slint's generated code
        // for the main window takes a 930 KiB frame when the mailbox first
        // appears (slint-ui/slint#14817). Ask for the 8 MiB the same code gets
        // on macOS and Linux; the kernel sizes the main stack from LC_MAIN.
        println!("cargo:rustc-link-arg-bins=-Wl,-stack_size,0x800000");
        println!("cargo:rerun-if-changed=platform/ios/Documents.m");
        println!("cargo:rerun-if-changed=platform/ios/PdfPreview.m");
        println!("cargo:rerun-if-changed=platform/ios/AppIcon.m");
        println!("cargo:rerun-if-changed=platform/ios/WebAuthentication.m");
        println!("cargo:rerun-if-changed=platform/ios/MemoryPressure.m");
    }
    if std::env::var_os("CARGO_CFG_TARGET_OS").as_deref() == Some(std::ffi::OsStr::new("windows")) {
        winresource::WindowsResource::new()
            .set_icon("resources/app-icon/flectar-mail.ico")
            // Opts into the segment heap (Windows 10 2004 and later), which
            // Microsoft says generally reduces memory use. Nothing else is set:
            // declaring DPI awareness or an OS version would change behaviour.
            .set_manifest_file("platform/windows/flectar-mail.manifest.xml")
            .compile()
            .expect("failed to embed the Windows icon and manifest");
        println!("cargo:rerun-if-changed=resources/app-icon/flectar-mail.ico");
        println!("cargo:rerun-if-changed=platform/windows/flectar-mail.manifest.xml");
    }

    // Application controls are painted from primitives in app.slint. Fluent is
    // only the deterministic implementation for the remaining layout/scroll
    // infrastructure and never selects a platform widget toolkit.
    let config = slint_build::CompilerConfiguration::new()
        .with_style("fluent".into())
        // A source phrase has one meaning throughout this application. Keeping
        // catalogs context-free avoids duplicate entries for shared controls.
        .with_default_translation_context(slint_build::DefaultTranslationContext::None)
        // Bundle the small gettext catalogs so desktop and mobile builds use
        // the same translations without depending on a system gettext install.
        .with_bundled_translations("lang");

    // Compile the non-visual tray separately from app.slint. Slint otherwise
    // registers app.slint's embedded font through the tray's shared
    // globals, which creates an unintended native WindowAdapter for a
    // SystemTrayIcon-rooted component. Keep the same style and translation
    // configuration for both compilation units.
    let manifest_dir = std::path::PathBuf::from(
        std::env::var_os("CARGO_MANIFEST_DIR").expect("CARGO_MANIFEST_DIR is set by Cargo"),
    );
    let out_dir =
        std::path::PathBuf::from(std::env::var_os("OUT_DIR").expect("OUT_DIR is set by Cargo"));
    let tray_dependencies = slint_build::compile_with_output_path(
        manifest_dir.join("ui/tray.slint"),
        out_dir.join("tray.rs"),
        config
            .clone()
            .with_bundled_translations(manifest_dir.join("lang")),
    )
    .expect("failed to compile Slint tray UI");
    for dependency in tray_dependencies {
        println!("cargo:rerun-if-changed={}", dependency.display());
    }

    slint_build::compile_with_config("ui/app.slint", config).expect("failed to compile Slint UI");
}