import subprocess

from lib.io import *

FLOWCONFIG_FILE = ".flowconfig"
CHANGELOG_FILE = "CHANGELOG.md"
UPDATED_CHANGELOG_MSG = "Updated " + CHANGELOG_FILE


class Status:
    worktree: str
    index: str
    file: str

    def __init__(self, line: str) -> None:
        self.worktree = line[0]
        self.index = line[1]
        self.file = line[3:].strip("\n")

class Git:
    FLOWCONFIG_FILE = ".flowconfig"

    command: list[str]
    check_returncode: bool = True

    @staticmethod
    def flow_config(*args, **kwargs):
        return Git("config", *args, file=FLOWCONFIG_FILE, **kwargs)

    @staticmethod
    def get_current_branch():
        return Git("rev-parse", "HEAD", abbrev_ref=True).firstline()

    @staticmethod
    def get_branches():
        return Git._get_references("heads")

    @staticmethod
    def status():
        return list(map(Status, Git("status", porcelain=True).lines(False)))

    @staticmethod
    def _get_references(kind: str):
        prefix = "refs/" + kind + "/"
        return map(
            lambda r: r.removeprefix(prefix),
            filter(
                lambda l: l.startswith(prefix),
                Git("for-each-ref", format="%(refname)").lines()
            )
        )

    def __init__(self, subcommand: str, *args: str, **kwargs: str | int | bool) -> None:
        self.command = ["git", subcommand]

        for option, value in kwargs.items():
            option = option.replace("_", "-")

            if isinstance(value, bool):
                if len(option) == 1:
                    self.command.append("-" + option)
                else:
                    prefix = "--" if value else "--no-"
                    self.command.append(prefix + option)
            else:
                value = value if isinstance(value, str) else str(value)

                if len(option) == 1:
                    self.command.append("-" + option)
                    self.command.append(value)
                else:
                    self.command.append("--" + option + '=' + value)

        self.command += args

    def lines(self, strip: bool = True):
        process = subprocess.run(self.command, capture_output=True, text=True)

        self.__print_process(process.stdout, process.stderr)

        if self.check_returncode:
            process.check_returncode()

        lines = process.stdout.splitlines()

        return lines if not strip else list(map(lambda l: l.strip(), lines))

    def firstline(self):
        lines = self.lines()

        return lines[0] if lines else ""

    def exec(self):
        process = subprocess.run(self.command, capture_output=True, text=True)

        self.__print_process(process.stdout, process.stderr)

        if self.check_returncode:
            process.check_returncode()

    def code(self):
        process = subprocess.run(self.command, capture_output=True, text=True)

        self.__print_process(process.stdout, process.stderr)

        return process.returncode

    def without_checking(self):
        self.check_returncode = False

        return self

    def __print_process(self, stdout: str, stderr: str):
        command = []

        for arg in self.command:
            if arg.startswith("--") and "=" in arg:
                pos = arg.index("=")
                arg = arg[:pos+1] + '"' + arg[pos+1:] + '"'
            elif " " in arg:
                arg = '"' + arg + '"'

            command.append(arg)

        print(COLOR_YELLOW + "> " + " ".join(command) + COLOR_RESET)

        for line in stdout.splitlines():
            print(COLOR_BLUE + "< " + line + COLOR_RESET)

        for line in stderr.splitlines():
            print(COLOR_RED + "! " + line + COLOR_RESET)