import re
from SCons.Script import *

_REPO_NAME = 'zlib'
_REPO_URL = 'https://github.com/madler/zlib.git'
_TAG_PATTERN = re.compile(r'^v([0-9]+)\.([0-9]+)(?:\.([0-9]+))?$')

def versions(env: Environment, update: bool = False):
    tags = env.GitTags(repo_name = _REPO_NAME, remote_url = _REPO_URL, force_fetch=update)
    result = []
    for tag in tags:
        match = _TAG_PATTERN.match(tag)
        if match:
            result.append((int(match.groups()[0]), int(match.groups()[1]), int(match.groups()[2] or 0)))
    return result

def dependencies(env: Environment, version) -> 'dict':
    return {}

def cook(env: Environment, version) -> dict:
    git_ref = f'refs/tags/v{version[0]}.{version[1]}'
    if version[2] != 0:
        git_ref = git_ref + f'.{version[2]}'
    repo = env.GitBranch(repo_name = _REPO_NAME, remote_url = _REPO_URL, git_ref = git_ref)
    checkout_root = repo['checkout_root']
    build_result = env.CMakeProject(project_root=checkout_root)
    return {
        'CPPPATH': [os.path.join(build_result['install_dir'], 'include')],
        'LIBS': [env.FindLib('z', paths=build_result['LIBPATH'])]
    }