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Create app.py

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  1. app.py +161 -0
app.py ADDED
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+ from flask import Flask, request, send_file, Response
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+ import os
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+ import zipfile
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+ import subprocess
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+ import shutil
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+
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+ app = Flask(__name__)
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+
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+ # --- HELPER: GENERATE KEY (Same as before) ---
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+ def generate_keystore():
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+ keystore_path = "debug.keystore"
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+ if not os.path.exists(keystore_path):
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+ cmd = [
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+ "keytool", "-genkey", "-v",
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+ "-keystore", keystore_path,
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+ "-storepass", "android",
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+ "-alias", "androiddebugkey",
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+ "-keypass", "android",
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+ "-keyalg", "RSA",
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+ "-keysize", "2048",
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+ "-validity", "10000",
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+ "-dname", "CN=AndroidDebug,O=Android,C=US"
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+ ]
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+ subprocess.run(cmd, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
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+ return keystore_path
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+
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+ # --- ROUTE: HOME (HTML FORM FOR TESTING) ---
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+ @app.route('/')
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+ def index():
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+ return '''
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+ <!doctype html>
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+ <title>Android Build Server</title>
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+ <h1>Upload Project ZIP</h1>
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+ <form action="/upload" method="post" enctype="multipart/form-data">
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+ <input type="file" name="file" required>
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+ <input type="submit" value="Build & Sign APK">
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+ </form>
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+ '''
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+
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+ # --- ROUTE: API ENDPOINT ---
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+ @app.route('/upload', methods=['POST'])
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+ def upload_file():
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+ if 'file' not in request.files:
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+ return "No file part", 400
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+
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+ file = request.files['file']
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+ if file.filename == '':
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+ return "No selected file", 400
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+
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+ if file:
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+ # 1. Cleanup & Save
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+ if os.path.exists("project_extract"):
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+ shutil.rmtree("project_extract")
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+ os.makedirs("project_extract", exist_ok=True)
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+
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+ zip_path = "uploaded_project.zip"
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+ file.save(zip_path)
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+
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+ # 2. Extract
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+ try:
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+ with zipfile.ZipFile(zip_path, "r") as zip_ref:
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+ zip_ref.extractall("project_extract")
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+ except Exception as e:
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+ return f"Error extracting ZIP: {str(e)}", 400
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+
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+ # 3. Find Root
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+ project_root = None
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+ for root, dirs, files in os.walk("project_extract"):
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+ if "gradlew" in files:
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+ project_root = root
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+ break
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+
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+ if not project_root:
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+ return "Error: ZIP file mein 'gradlew' nahi mila.", 400
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+
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+ # 4. Permissions
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+ gradlew_path = os.path.join(project_root, "gradlew")
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+ subprocess.run(["chmod", "+x", gradlew_path])
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+
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+ # 5. Build
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+ # Hum assembleRelease chala rahe hain
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+ build_cmd = ["./gradlew", "assembleRelease", "--no-daemon", "--stacktrace"]
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+
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+ try:
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+ result = subprocess.run(
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+ build_cmd,
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+ cwd=project_root,
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+ stdout=subprocess.PIPE,
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+ stderr=subprocess.PIPE,
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+ text=True
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+ )
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+
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+ if result.returncode == 0:
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+ # 6. Find Unsigned APK
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+ unsigned_apk = None
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+ for root, dirs, files in os.walk(project_root):
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+ for f in files:
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+ if f.endswith(".apk") and "release" in f:
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+ unsigned_apk = os.path.join(root, f)
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+ break
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+
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+ if unsigned_apk:
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+ # 7. SIGNING
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+ keystore = generate_keystore()
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+ signed_apk_name = "Installable_App.apk"
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+ aligned_apk = "aligned.apk"
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+
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+ # Full path for output
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+ output_apk_path = os.path.abspath(signed_apk_name)
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+
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+ # Step A: ZipAlign
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+ try:
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+ subprocess.run(["zipalign", "-v", "-p", "4", unsigned_apk, aligned_apk],
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+ stdout=subprocess.DEVNULL, check=True)
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+ apk_to_sign = aligned_apk
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+ except:
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+ apk_to_sign = unsigned_apk
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+
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+ # Step B: APKSigner
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+ sign_cmd = [
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+ "apksigner", "sign",
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+ "--ks", keystore,
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+ "--ks-pass", "pass:android",
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+ "--out", output_apk_path,
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+ apk_to_sign
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+ ]
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+
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+ sign_result = subprocess.run(sign_cmd, capture_output=True, text=True)
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+
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+ if sign_result.returncode == 0:
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+ # CLEANUP ZIP before sending
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+ if os.path.exists(zip_path):
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+ os.remove(zip_path)
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+
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+ # RETURN THE SIGNED APK
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+ return send_file(
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+ output_apk_path,
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+ as_attachment=True,
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+ download_name=signed_apk_name,
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+ mimetype="application/vnd.android.package-archive"
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+ )
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+ else:
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+ # Signing Failed - Show Logs
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+ logs = sign_result.stderr.splitlines()[:200]
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+ return Response("\n".join(logs), status=500, mimetype="text/plain")
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+ else:
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+ return "Build Success but APK file not found.", 500
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+ else:
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+ # BUILD FAILED - RETURN FIRST 200 LINES OF LOGS
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+ # Combining stdout and stderr to capture full context
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+ full_log = result.stdout + "\n" + result.stderr
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+ logs = full_log.splitlines()[:200]
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+ error_message = "BUILD FAILED. LOGS (First 200 lines):\n\n" + "\n".join(logs)
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+ return Response(error_message, status=500, mimetype="text/plain")
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+
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+ except Exception as e:
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+ return f"System Error: {str(e)}", 500
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+
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+ if __name__ == '__main__':
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+ # Hugging Face Spaces port 7860 use karta hai
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+ app.run(host='0.0.0.0', port=7860)