from __future__ import annotations

from dataclasses import dataclass, field


@dataclass
class LazadaMessageTemplate:
    template_id: int
    payload: dict = field(default_factory=dict)

    def to_dict(self) -> dict:
        return {"template_id": self.template_id, **self.payload}

    @classmethod
    def text(cls, txt: str, translate_txt: str | None = None) -> LazadaMessageTemplate:
        payload = {"txt": txt}
        if translate_txt:
            payload["translateTxt"] = translate_txt
        return cls(template_id=1, payload=payload)

    @classmethod
    def system(cls, txt: str) -> LazadaMessageTemplate:
        return cls(template_id=2, payload={"txt": txt})

    @classmethod
    def image(cls, img_url: str, width: int = 800, height: int = 600) -> LazadaMessageTemplate:
        return cls(
            template_id=3,
            payload={
                "img_url": img_url,
                "width": width,
                "height": height,
            },
        )

    @classmethod
    def emoji(cls, txt: str) -> LazadaMessageTemplate:
        return cls(template_id=4, payload={"txt": txt})

    @classmethod
    def video(cls, video_id: str, width: int = 800, height: int = 600) -> LazadaMessageTemplate:
        return cls(
            template_id=6,
            payload={
                "video_id": video_id,
                "width": width,
                "height": height,
            },
        )

    @classmethod
    def product_card(cls, item_id: str) -> LazadaMessageTemplate:
        return cls(template_id=10006, payload={"item_id": item_id})

    @classmethod
    def order_card(cls, order_id: str) -> LazadaMessageTemplate:
        return cls(template_id=10007, payload={"order_id": order_id})

    @classmethod
    def coupon(cls, promotion_id: str) -> LazadaMessageTemplate:
        return cls(template_id=10008, payload={"promotion_id": promotion_id})

    @classmethod
    def invite_follow(cls) -> LazadaMessageTemplate:
        return cls(template_id=10010, payload={})


TEMPLATE_DESCRIPTIONS = {
    1: "普通文本",
    2: "系统消息",
    3: "图片",
    4: "表情 (Emoji)",
    6: "视频",
    10006: "商品卡片",
    10007: "订单卡片",
    10008: "优惠券",
    10010: "邀请关注店铺",
}

INCOMING_TEMPLATE_LABELS = {
    1: "text",
    2: "system",
    3: "image",
    4: "emoji",
    6: "video",
    10006: "product_card",
    10007: "order_card",
    10008: "coupon",
    10010: "invite_follow",
}


def truncate_text(content: str, max_chars: int = 2000) -> str:
    if len(content) <= max_chars:
        return content
    return content[: max_chars - 3] + "..."


def strip_html(content: str) -> str:
    import re

    return re.sub(r"<[^>]+>", "", content or "")