"""
* Deprecated.
"""

import re


def _line_lower_result_replace(
    line, result, line_match: str, result_match: str, result_replacement: str
) -> str:
    if line_match in line.lower() and result_match.lower() in result.lower():
        if result.istitle():
            result = re.sub(
                result_match, result_replacement, result, flags=re.IGNORECASE
            )
            return result.title()
        else:
            return re.sub(result_match, result_replacement, result, flags=re.IGNORECASE)
    else:
        return result


def _line_result_replace(
    line, result, line_match: str, result_match: str, result_replacement: str
) -> str:
    if line_match in line and result_match in result:
        return result.replace(result_match, result_replacement)
    else:
        return result


def _result_replace(result, result_match: str, result_replacement: str) -> str:
    if result_match in result:
        return result.replace(result_match, result_replacement)
    else:
        return result


def post_zh2en_auto_translation(
    line: str, auto_translated_line: str, mode="standard"
) -> str:
    """
    :param line: The Chinese source line.
    :param auto_translated_line: The translated line by auto translation service.
    :returns: The post processed result.
    """
    result = auto_translated_line
    result = _line_result_replace(line, result, "PingCAP", "Pingcap", "PingCAP")
    result = _line_lower_result_replace(line, result, "关系", "ties", "relation")
    # Adding new rules below
    result = _line_lower_result_replace(line, result, "概述", "rundown", "overview")
    result = _line_lower_result_replace(
        line, result, "学习目标", "learning goals", "Objectives"
    )

    # Workshop: TiDB Specific Features
    result = _line_lower_result_replace(
        line,
        result,
        "zhs.edu.pingcap.com",
        "https://zhs.edu.pingcap.com/catalog/info/id:208",
        "https://eng.edu.pingcap.com/catalog/info/id:204",
    )
    # Course: Introduction to TiDB
    result = _line_lower_result_replace(
        line,
        result,
        "zhs.edu.pingcap.com",
        "https://zhs.edu.pingcap.com/catalog/info/id:218",
        "https://eng.edu.pingcap.com/catalog/info/id:203",
    )
    result = _line_lower_result_replace(
        line,
        result,
        "cn.pingcap.com/courses-catalog",
        "cn.pingcap.com/courses-catalog",
        "pingcap.com/education",
    )
    # Correct complex translation result.
    # Remove trailing "." for bullets
    if result.strip().startswith("+"):
        result = result.strip(".")
    if result.strip().startswith("#"):
        result = result.strip(".")
    # Remove the generated **
    if "**" in result and "**" not in line:
        result = result.replace("**", "")
    if "tidb/tikv/pd" in line.lower():
        result = re.sub("tidb/tikv/pd", "TiDB/TiKV/PD", result, flags=re.IGNORECASE)
    if mode != "silent":
        print("<zh2en>[= " + line + " =]" + " -> " + "[= " + result + " =]")
    return result