package.py

import argparse
import configparser
import glob
import os
import shutil
import sys
import tarfile
import tempfile
import zipfile
from argparse import Namespace
from subprocess import check_call
from typing import Dict, List, Optional

SCALELIB_VERSION = "1.0.9"
CYCLECLOUD_API_VERSION = "8.9.0"
CONCURRENT_HANDLER_VERSION = "0.9.21"

def get_cycle_libs(args: Namespace) -> List[str]:
    ret = []

    scalelib_file = f"cyclecloud-scalelib-{SCALELIB_VERSION}.tar.gz"
    cyclecloud_api_file = f"cyclecloud_api-{CYCLECLOUD_API_VERSION}-py2.py3-none-any.whl"
    concurrent_handler_file =f"concurrent-log-handler-{CONCURRENT_HANDLER_VERSION}.tar.gz"
    scalelib_url = f"https://github.com/Azure/cyclecloud-scalelib/archive/{SCALELIB_VERSION}.tar.gz"
    # TODO RDH!!!
    cyclecloud_api_url = f"https://github.com/Azure/cyclecloud-symphony/releases/download/v3.1.15/cyclecloud_api-{CYCLECLOUD_API_VERSION}-py2.py3-none-any.whl"
    concurrent_handler_url = f"https://github.com/Preston-Landers/concurrent-log-handler/archive/refs/tags/{CONCURRENT_HANDLER_VERSION}.tar.gz"
    to_download = {
        scalelib_file: (args.scalelib, scalelib_url),
        cyclecloud_api_file: (args.cyclecloud_api, cyclecloud_api_url),
        concurrent_handler_file: (args.concurrent_log_handler, concurrent_handler_url)
    }

    for dep_file, (arg_override, url) in to_download.items():
        if arg_override:
            if not os.path.exists(arg_override):
                print(arg_override, "does not exist", file=sys.stderr)
                sys.exit(1)
            fname = os.path.basename(arg_override)
            orig = os.path.abspath(arg_override)
            dest = os.path.abspath(os.path.join("libs", fname))
            if orig != dest:
                shutil.copyfile(orig, dest)
            ret.append(fname)
        else:
            dest = os.path.join("libs", dep_file)
            check_call(["curl", "-L", "-k", "-s", "-f", "-o", dest, url])
            ret.append(dep_file)
            print(f"Downloaded {url} to {dest}")

    return ret


def execute() -> None:
    expected_cwd = os.path.abspath(os.path.dirname(__file__))
    os.chdir(expected_cwd)

    if not os.path.exists("libs"):
        os.makedirs("libs")

    argument_parser = argparse.ArgumentParser(
        "Builds the IBM Spectrum Symphony HostFactory provider plugin for Azure CycleCloud with all dependencies.\n"
        + "If you don't specify local copies of scalelib or cyclecloud-api they will be downloaded from github."
    )
    argument_parser.add_argument("--scalelib", default=None)
    argument_parser.add_argument("--cyclecloud-api", default=None)
    argument_parser.add_argument("--concurrent-log-handler", default=None)
    args = argument_parser.parse_args()

    cycle_libs = get_cycle_libs(args)

    parser = configparser.ConfigParser()
    ini_path = os.path.abspath("project.ini")

    with open(ini_path) as fr:
        parser.read_file(fr)

    version = parser.get("project", "version")
    if not version:
        raise RuntimeError("Missing [project] -> version in {}".format(ini_path))

    if not os.path.exists("dist"):
        os.makedirs("dist")

    zf_filename = f"cyclecloud-symphony-pkg-{version}.zip"
    zf_path = os.path.join(expected_cwd, "dist", zf_filename)
    zf = zipfile.ZipFile(zf_path, "w", zipfile.ZIP_DEFLATED)


    build_dir = tempfile.mkdtemp("cyclecloud-symphony")

    def _unix2dos(base_path: str, patterns: Optional[str] = ['**/*.ps1', '**/*.bat']) -> None:
        import glob
        print("Converting unix2dos: ")
        for pattern in patterns:
            for name in glob.glob(os.path.join(base_path, pattern), recursive=True):
                check_call(["unix2dos", name])

    def _add(name: str, path: Optional[str] = None, mode: Optional[int] = None) -> None:
        path = path or name
        print(f"Adding : {name} from {path}")
        zf.write(path, name)

    def _add_directory(name: str, path: Optional[str] = None) -> None:
       with zf as zip_ref:
          for folder_name, subfolders, filenames in os.walk(name):
              for filename in filenames:
                 file_path = os.path.join(folder_name, filename)
                 zip_ref.write(file_path)

    packages = []
    for dep in cycle_libs:
        dep_path = os.path.abspath(os.path.join("libs", dep))
        packages.append(dep_path)

    check_call(["pip", "download"] + packages, cwd=build_dir)

    print("Using build dir", build_dir)
    by_package: Dict[str, List[str]] = {}
    for fil in os.listdir(build_dir):
        toks = fil.split("-", 1)
        package = toks[0]
        if package == "cyclecloud":
            package = "{}-{}".format(toks[0], toks[1])
        if package not in by_package:
            by_package[package] = []
        by_package[package].append(fil)

    for package, fils in by_package.items():
        
        if len(fils) > 1:
            print("WARNING: Ignoring duplicate package found:", package, fils)
            assert False

    for fil in os.listdir(build_dir):
        if "pyyaml" in fil.lower():
            continue
        if "itsdanger" in fil.lower():
            continue
        if "zipp" in fil.lower():
            continue
        
        path = os.path.join(build_dir, fil)
        _add("packages/" + fil, path)

    # Remove build artifacts
    artifact_dirs = ['hostfactory/host_provider/src/__pycache__', 'hostfactory/host_provider/.mypy_cache']
    for dir_path in artifact_dirs:        
        try:
            if os.path.exists(dir_path):
                shutil.rmtree(dir_path)
        except OSError as e:
            print("Error: %s : %s" % (dir_path, e.strerror))

    _unix2dos("hostfactory", patterns=['**/*.ps1', '**/*.bat'])
    _add_directory("hostfactory")


    print("Created package: ", zf.filename)
    print("\n".join(f for f in zf.namelist()))
    
    blob_dir = os.path.join(expected_cwd, 'blobs', 'symphony')
    blob_path = os.path.join(blob_dir, zf_filename)
    os.makedirs(blob_dir, exist_ok=True)
    print(f"Copying package to {blob_path}")


    def list_files_recursive(directory):
        for root, dirs, files in os.walk(directory):
            for file in files:
                print(os.path.join(root, file))

    list_files_recursive(blob_dir)

    shutil.copyfile(zf_path, blob_path)

if __name__ == "__main__":
    execute()