from __future__ import annotations

from typing import Any


def format_approval_message(request_id: str, action: str, payload: dict[str, Any] | None = None) -> str:
    """生成审批请求消息文本。

    iMessage 不支持内联按钮，使用文本命令模拟审批。
    """
    lines = [
        "Pending Approval Required",
        f"Action: {action}",
        f"Request ID: {request_id}",
        "",
    ]

    if payload:
        for key, val in payload.items():
            val_str = str(val)[:100]
            lines.append(f"  {key}: {val_str}")

    lines.extend(
        [
            "",
            "Reply with:",
            f"  approve {request_id}  — to approve",
            f"  reject {request_id}   — to reject",
        ]
    )

    return "\n".join(lines)


def format_approval_result(request_id: str, approved: bool, message: str = "") -> str:
    status = "APPROVED" if approved else "REJECTED"
    lines = [f"Approval {status}: {request_id}"]
    if message:
        lines.append(f"  {message}")
    return "\n".join(lines)


def parse_approval_command(text: str) -> tuple[str | None, str | None]:
    """解析审批文本命令。

    返回 (action, request_id)，其中 action 为 "approve" 或 "reject"。
    """
    text_lower = text.strip().lower()
    parts = text_lower.split(maxsplit=1)
    if len(parts) < 2:
        return None, None
    action = parts[0]
    request_id = parts[1].strip()
    if action in ("approve", "reject"):
        return action, request_id
    return None, None