#!/usr/bin/env php
<?php
################################################################
# This script just takes a built APK and moves it to a directory #
################################################################

# die on errors
declare(strict_types=1);
error_reporting(E_ALL);
ini_set('display_errors', '1');

// Take environment variables.
$TELEGRAM_BOT_TOKEN = getenv('TELEGRAM_BOT_TOKEN');
$TELEGRAM_CHAT_ID = getenv('TELEGRAM_CHAT_ID');

// No env, no party.
if (!$TELEGRAM_BOT_TOKEN) {
        throw new Exception("Missing ENV TELEGRAM_BOT_TOKEN");
}
if (!$TELEGRAM_CHAT_ID) {
        throw new Exception("Missing ENV TELEGRAM_CHAT_ID");
}

// Usage: the first argument is the Differential ID number or empty if working on master.

// expected base URL
$EXPECTED_DEPLOY_URL = 'https://lab.reyboz.it/builds/libre-busto/';

// pathname to the repository built apk file
$APK_PATH = './app/build/outputs/apk/gitpull/app-gitpull-signed.apk';

// Git commit hash
$git_commit = trim(shell_exec('git rev-parse HEAD'));
$git_commit_title = trim(shell_exec('git show --pretty=format:%s -s HEAD'));

// repository build pathname
$BUILD_DIR = '/home/www-data/reyboz.it/lab/builds/libre-busto';

// document id of the page to be commented
$document_id = '';

// get the branch name
$branch_name = 'asd';
if (isset($argv[1]) && !empty($argv[1])) {
        // it's a Differential revision
        $branch_name = 'D' . $argv[1];
        $document_id = $branch_name;
} else {
        // get a ref name (probably "HEAD")
        $remote_shit = trim(shell_exec('git name-rev --name-only HEAD'));
        $branch_name = basename($remote_shit);
}

// give a name of this built apk
$APK_NAME = $branch_name . '-libre-busto.apk';

// complete build URL
$BUILD_URL = $EXPECTED_DEPLOY_URL . $APK_NAME;

// pathname to the APK file in the HTTP build directory
$BUILD_APK_FILE = $BUILD_DIR . '/' . $APK_NAME;

// pathname to the git show file in the HTTP build directory
$BUILD_GIT_SHOW_FILE = $BUILD_DIR . '/' . $branch_name . '-git-show.txt';

echo "Current directory:\n";
echo "  " . getcwd() . "\n";

echo "Calculating sha256sum of:\n";
echo "  $APK_PATH\n";

echo "File info\n";
system("ls -l $APK_PATH");

// get the digital signature of the last version
$APK_SHA256 = trim(shell_exec("sha256sum $APK_PATH | head -c 64"));

// overwrite the latest built APK for this branch name (force date update)
echo "Cleaning old builds\n";
if (file_exists($BUILD_APK_FILE)) {
    unlink($BUILD_APK_FILE);
}
copy($APK_PATH, $BUILD_APK_FILE);

// overwrite the latest git show for this branch name (force date update)
if (file_exists($BUILD_GIT_SHOW_FILE)) {
    unlink($BUILD_GIT_SHOW_FILE);
}
file_put_contents($BUILD_GIT_SHOW_FILE, shell_exec('git show'));

// update checksums
chdir($BUILD_DIR);
unlink('sha1sum.txt');
shell_exec('sha1sum * > sha1sum.txt');
chdir('..');

// show the build URL in the log
echo "Published here:\n";
echo "$BUILD_URL\n";

$apix = '`';

// Escaping texts for Telegram
$BUILD_URL_ESCAPED = escapeshellarg($BUILD_URL);
$APK_NAME_ESCAPED = escapeshellarg($APK_NAME);

// add a comment to the build URL
if (!empty($document_id) && empty(getenv('NO_COMMENT'))) {
        // We have a Differentials revision under review!
        $document_id_escaped = escapeshellarg($document_id);

        // Send message to Telegram groups.
        $telegram_chat_content = implode("\n", [
                "⚙ Dear Android hackers, please review this promising patch:",
                "https://gitpull.it/$document_id_escaped",
                "",
                "Here the related fresh test build:",
                "[Download $APK_NAME_ESCAPED]($BUILD_URL_ESCAPED)",
                "",
                "APK sha256:",
                "$apix$APK_SHA256$apix"
        ]);

        echo "DEBUG TELEGRAM CONTENT\n";
        echo "$telegram_chat_content\n";
        shell_exec(sprintf(
                "~/bin/telegram-comment.sh %s %s %s || true",
                escapeshellarg($TELEGRAM_BOT_TOKEN),
                escapeshellarg($TELEGRAM_CHAT_ID),
                escapeshellarg($telegram_chat_content)
        ));

        // Send message to Phorge.
        echo "Adding bipbop Comment to $document_id\n";
        shell_exec(sprintf(
                "~/bin/phab-comment.php %s %s %s || true",
                escapeshellarg($document_id),
                escapeshellarg($BUILD_URL),
                escapeshellarg($APK_SHA256)
        ));
} else {
        // We have NOT a Differentials revision under review!
        // So this is an atomic commit.
        $git_commit_title_escaped = escapeshellarg($git_commit_title);

        $telegram_chat_content = implode("\n", [
                "🌚 New commit: *$git_commit_title_escaped*",
                "https://gitpull.it/R4:$git_commit",
                "",
                "Try this fresh test APK:",
                "[Download $APK_NAME_ESCAPED]($BUILD_URL_ESCAPED)",
                "",
                "APK fingerprint sha256:",
                "$apix$APK_SHA256$apix"
        ]);


        echo "DEBUG TELEGRAM CONTENT\n";
        echo "$telegram_chat_content\n";
        shell_exec(sprintf(
                "~/bin/telegram-comment.sh %s %s %s || true",
                escapeshellarg($TELEGRAM_BOT_TOKEN),
                escapeshellarg($TELEGRAM_CHAT_ID),
                escapeshellarg($telegram_chat_content)
        ));
}

// delete very old files
echo "Cleaning\n";
shell_exec(sprintf(
        "find %s -type f -mtime +120 -delete",
        escapeshellarg($BUILD_DIR)
));

// clean old APK in the repository to never re-use it by mistake
// as it happened when we moved everything to the /app directory
unlink($APK_PATH);

echo "Done\n";