mod axml;
mod bigint;
mod cert;
mod deflate;
mod keydata;
mod sha256;
mod sign_v2;
mod zip;

use axml::{val, AxmlBuilder};

fn build_manifest() -> Vec<u8> {
    let mut b = AxmlBuilder::new();

    let a_name = b.intern("name");
    let a_hascode = b.intern("hasCode");
    let a_exported = b.intern("exported");
    let a_minsdk = b.intern("minSdkVersion");

    let s_manifest = b.intern("manifest");
    let s_uses_sdk = b.intern("uses-sdk");
    let s_application = b.intern("application");
    let s_activity = b.intern("activity");
    let a_package = b.intern("package");

    let v_package = b.intern("android.app");
    let v_activity = b.intern(".Activity");

    let resmap = vec![
        (a_name, AxmlBuilder::res_id_for("name").unwrap()),
        (a_minsdk, AxmlBuilder::res_id_for("minSdkVersion").unwrap()),
        (a_hascode, AxmlBuilder::res_id_for("hasCode").unwrap()),
        (a_exported, AxmlBuilder::res_id_for("exported").unwrap()),
    ];

    b.start();
    b.open_ns(
        s_manifest,
        &[(a_package, val::TYPE_STRING, v_package, v_package as i32, false)],
    );
    b.open(s_uses_sdk, &[(a_minsdk, val::TYPE_INT_DEC, 34, -1)]);
    b.close(s_uses_sdk);
    b.open(s_application, &[(a_hascode, val::TYPE_INT_BOOL, 0, -1)]);
    b.open(
        s_activity,
        &[
            (a_name, val::TYPE_STRING, v_activity, v_activity as i32),
            (a_exported, val::TYPE_INT_BOOL, 0xFFFF_FFFF, -1),
        ],
    );
    let s_intent_filter = b.intern("intent-filter");
    let s_action = b.intern("action");
    let s_category = b.intern("category");
    let v_action_main = b.intern("android.intent.action.MAIN");
    let v_cat_launcher = b.intern("android.intent.category.LAUNCHER");
    b.open(s_intent_filter, &[]);
    b.open(s_action, &[(a_name, val::TYPE_STRING, v_action_main, v_action_main as i32)]);
    b.close(s_action);
    b.open(s_category, &[(a_name, val::TYPE_STRING, v_cat_launcher, v_cat_launcher as i32)]);
    b.close(s_category);
    b.close(s_intent_filter);
    b.close(s_activity);
    b.close(s_application);
    b.close(s_manifest);
    b.end();
    b.finish(&resmap)
}

fn main() {
    let manifest = build_manifest();

    let mut z = zip::Zip::new();
    z.add_deflated("AndroidManifest.xml", manifest);
    let apk_unsigned = z.finish();

    let apk = sign_v2::add_v2_signature(&apk_unsigned);

    std::fs::create_dir_all("out").expect("create out dir");
    let path = "out/app.apk";
    std::fs::write(path, &apk).expect("write apk");

    println!("{} ({} bytes)", path, apk.len());
    println!("adb install -r {}", path);
    println!("adb shell am start -n android.app/.Activity");
}