import os
import shutil
import sys
from pathlib import Path
from src.version import __version__
import argparse
import getpass
import random
from cryptography.fernet import Fernet
import string


def _resolve_botty_env(conda_path):
    """Find the botty Python environment directory.

    Tries (in order):
    1. Explicit conda path (conda_path/envs/botty)
    2. Current sys.prefix if it looks like a conda env
    3. Fallback to sys.prefix (pip/virtualenv installs)
    """
    # 1. Explicit conda path
    botty_env = os.path.join(conda_path, "envs", "botty")
    if os.path.isdir(botty_env):
        return botty_env

    # 2. Current prefix is a conda env
    if os.path.isfile(os.path.join(sys.prefix, "conda-meta", "history")) or \
       os.path.isdir(os.path.join(sys.prefix, "Library")):
        return sys.prefix

    # 3. Plain pip / virtualenv — sys.prefix is the site
    return sys.prefix


parser = argparse.ArgumentParser(description="Build Botty")
parser.add_argument(
    "-v" , "--version",
    type=str,
    help="New release version e.g. 0.4.2",
    default=""
)
parser.add_argument(
    "-c", "--conda_path",
    type=str,
    help="Path to local conda e.g. C:\\Users\\USER\\miniconda3",
    default=f"C:\\Users\\{getpass.getuser()}\\miniconda3")
parser.add_argument(
    "-r", "--random_name",
    action='store_true',
    help="Will generate a random name for the botty exe")
parser.add_argument(
    "-k", "--use_key",
    action='store_true',
    help="Will build with encryption key")
args = parser.parse_args()


# clean up
def clean_up():
    # pyinstaller
    if os.path.exists("build"):
        shutil.rmtree("build")
    if os.path.exists("main.spec"):
        os.remove("main.spec")
    if os.path.exists("health_manager.spec"):
        os.remove("health_manager.spec")
    if os.path.exists("shopper.spec"):
        os.remove("shopper.spec")

if __name__ == "__main__":
    new_version_code = None
    if args.version != "":
        print(f"Releasing new version: {args.version}")
        os.system(f"git checkout -b new-release-v{args.version}")
        botty_dir = f"botty_v{args.version}"
        version_code = ""
        with open('src/version.py', 'r') as f:
            version_code = f.read()
        version_code = version_code.split("=")
        new_version_code = f"{version_code[0]}= '{args.version}'"
        with open('src/version.py', 'w') as f:
            f.write(new_version_code)
    else:
        botty_dir = f"botty_v{__version__}"
        print(f"Building version: {__version__}")

    clean_up()

    if os.path.exists(botty_dir):
        for path in Path(botty_dir).glob("**/*"):
            if path.is_file():
                os.remove(path)
            elif path.is_dir():
                shutil.rmtree(path)
        shutil.rmtree(botty_dir)

    botty_env = _resolve_botty_env(args.conda_path)
    pyinstaller_exe = os.path.join(botty_env, "Scripts", "pyinstaller.exe")
    if not os.path.isfile(pyinstaller_exe):
        raise RuntimeError(f"PyInstaller not found at {pyinstaller_exe}. "
                           f"Install with: pip install pyinstaller")

    # DLL dirs for PyInstaller to resolve native dependencies.
    # Conda: Library\bin, Library\lib, DLLs
    # pip/virtualenv: just the system DLLs under sys.prefix
    dll_dirs = []
    for d in ["Library/bin", "Library/lib", "DLLs"]:
        p = os.path.join(botty_env, d)
        if os.path.isdir(p):
            dll_dirs.append(p)
    if dll_dirs:
        os.environ["PATH"] = os.pathsep.join(dll_dirs) + os.pathsep + os.environ.get("PATH", "")

    for exe in ["main.py", "shopper.py"]:
        key_cmd = " "
        if args.use_key:
            key = Fernet.generate_key().decode("utf-8")
            key_cmd = " --key " + key
        installer_cmd = f'{pyinstaller_exe} --onefile --noconsole --distpath {botty_dir}{key_cmd} --exclude-module graphviz --exclude-module keyboard --exclude-module mouse --exclude-module pyclick --exclude-module mouseinfo --paths .\\src --paths "{botty_env}\\Lib\\site-packages" src\\{exe}'
        ret = os.system(installer_cmd)
        if ret != 0:
            raise RuntimeError(f"PyInstaller failed for {exe} (exit {ret})")

    os.makedirs(f"{botty_dir}/config", exist_ok=True)

    with open(f"{botty_dir}/config/custom.ini", "w") as f:
        f.write("; Add parameters you want to overwrite from param.ini here")
    shutil.copy("config/game.ini", f"{botty_dir}/config/")
    shutil.copy("config/params.ini", f"{botty_dir}/config/")
    shutil.copy("config/shop.ini", f"{botty_dir}/config/")
    shutil.copy("config/default.bnip", f"{botty_dir}/config/")
    os.makedirs(f"{botty_dir}/config/bnip", exist_ok=True)
    shutil.copy("README.md", f"{botty_dir}/")
    shutil.copytree("assets", f"{botty_dir}/assets")
    shutil.copytree("src", f"{botty_dir}/src")
    shutil.copy("environment.yml", f"{botty_dir}/")
    shutil.copy("install.bat", f"{botty_dir}/")
    shutil.copy("find_python.bat", f"{botty_dir}/")
    shutil.copy("run_botty.bat", f"{botty_dir}/")
    shutil.copy("run.bat", f"{botty_dir}/")
    if os.path.exists("dependencies"):
        shutil.copytree("dependencies", f"{botty_dir}/dependencies")

    # Bundle a portable Tesseract so the standalone exe is click-and-run with
    # working OCR and no separate install. ocr.py prefers <exe_dir>/tesseract/
    # tesseract.exe. Source: TESSERACT_DIR env or the default UB Mannheim path.
    # Skipped (with a warning) if not present — the bot still works once the
    # user runs install.bat, which sets OCR up the conda way.
    tesseract_src = os.environ.get("TESSERACT_DIR", r"C:\Program Files\Tesseract-OCR")
    tess_exe = os.path.join(tesseract_src, "tesseract.exe")
    if os.path.isfile(tess_exe):
        print(f"Bundling Tesseract from {tesseract_src}")
        # Copy the exe + DLLs; skip their tessdata (we ship our own trained
        # models in assets/tessdata and pass --tessdata-dir to point at them).
        os.makedirs(f"{botty_dir}/tesseract", exist_ok=True)
        for entry in os.listdir(tesseract_src):
            src = os.path.join(tesseract_src, entry)
            if os.path.isfile(src) and entry.lower().endswith((".exe", ".dll")):
                shutil.copy(src, f"{botty_dir}/tesseract/")
    else:
        print(f"WARNING: Tesseract not found at {tesseract_src} — release will "
              f"rely on install.bat for OCR setup. Set TESSERACT_DIR to bundle it.")
    clean_up()

    if args.random_name:
        print("Generate random names")
        new_name = ''.join(random.choices(string.ascii_letters, k=random.randint(6, 14)))
        os.rename(f'{botty_dir}/main.exe', f'{botty_dir}/{new_name}.exe')

    # Rename main.exe to avoid Warden flagging the obvious name
    # In CI/production builds (env BOTTY_NO_RENAME=1) keep main.exe as-is
    if not args.random_name and not os.environ.get("BOTTY_NO_RENAME"):
        new_name = ''.join(random.choices(string.ascii_lowercase + string.digits, k=8))
        os.rename(f'{botty_dir}/main.exe', f'{botty_dir}/{new_name}.exe')
        print(f"Renamed main.exe -> {new_name}.exe")

    if new_version_code is not None:
        os.system(f'git add .')
        os.system(f'git commit -m "Bump version to v{args.version}"')