from __future__ import annotations

import base64
import logging
import os

import httpx

from yuxi.channel.extensions.imessage.errors import IMessageSendError, classify_http_error
from yuxi.channel.extensions.imessage.format import IMessageFormatAdapter
from yuxi.channel.protocols import OutboundDeliveryMode, OutboundDeliveryCapabilities, OutboundPresentationCapabilities

logger = logging.getLogger(__name__)

DEFAULT_CHUNK_LIMIT = 4000


class IMessageOutboundAdapter:
    delivery_mode = OutboundDeliveryMode.DIRECT
    chunker_mode = "newline"
    text_chunk_limit = DEFAULT_CHUNK_LIMIT
    poll_max_options = None
    supports_poll_duration_seconds = False
    supports_anonymous_polls = False
    extract_markdown_images = False
    presentation_capabilities = OutboundPresentationCapabilities(
        supported=False,
        buttons=False,
        selects=False,
        context=False,
        divider=False,
    )
    delivery_capabilities = OutboundDeliveryCapabilities(
        pin=False,
        durable_final_text=True,
        durable_final_media=False,
    )

    def __init__(self, echo_cache=None):
        self._format = IMessageFormatAdapter()
        self._echo_cache = echo_cache
        self._http: httpx.AsyncClient | None = None

    async def _get_http(self) -> httpx.AsyncClient:
        if self._http is None:
            self._http = httpx.AsyncClient(timeout=httpx.Timeout(30.0))
        return self._http

    def chunker(self, text: str, limit: int, ctx: object | None = None) -> list[str]:
        return self._format.chunk_text(text, limit)

    def sanitize_text(self, text: str, payload: object) -> str:
        return text

    def should_skip_plain_text_sanitization(self, payload: object) -> bool:
        return True

    def normalize_payload(self, payload: object, config: dict, account_id: str | None = None) -> object | None:
        return payload

    def resolve_effective_text_chunk_limit(
        self, config: dict, account_id: str | None = None, fallback_limit: int | None = None
    ) -> int | None:
        return self.text_chunk_limit

    async def send_text(
        self,
        target_id: str,
        content: str,
        *,
        reply_to_id: str | None = None,
        thread_id: str | None = None,
        account_id: str | None = None,
        _account: dict | None = None,
    ) -> None:
        http = await self._get_http()
        server_url, password = await self._resolve_server(account_id, _account)

        formatted = self._format.format_for_imessage(content)
        if self._echo_cache:
            self._echo_cache.remember(target_id, formatted)

        payload = {
            "text": formatted,
            "chatGuid": target_id,
        }
        if reply_to_id:
            payload["replyToGuid"] = reply_to_id

        try:
            resp = await http.post(
                f"{server_url}/api/v1/message/text",
                json=payload,
                headers={"Password": password},
            )
            if resp.status_code >= 400:
                raise classify_http_error(resp.status_code, resp.text)
        except httpx.RequestError as e:
            raise IMessageSendError(f"Failed to send text: {e}") from e

    async def send_media(
        self,
        target_id: str,
        media_url: str,
        media_type: str,
        reply_to_id: str | None = None,
        thread_id: str | None = None,
        account_id: str | None = None,
        _account: dict | None = None,
    ) -> None:
        http = await self._get_http()
        server_url, password = await self._resolve_server(account_id, _account)

        try:
            media_resp = await http.get(media_url)
            media_resp.raise_for_status()
            media_data = media_resp.content
        except Exception as e:
            raise IMessageSendError(f"Failed to download media: {e}") from e

        media_b64 = base64.b64encode(media_data).decode("utf-8")
        content_type = media_resp.headers.get("content-type", media_type)

        payload = {
            "chatGuid": target_id,
            "base64Data": media_b64,
            "mimeType": content_type,
        }

        try:
            resp = await http.post(
                f"{server_url}/api/v1/message/attachment",
                json=payload,
                headers={"Password": password},
            )
            if resp.status_code >= 400:
                raise classify_http_error(resp.status_code, resp.text)
        except httpx.RequestError as e:
            raise IMessageSendError(f"Failed to send media: {e}") from e

    async def send_reaction(
        self,
        target_id: str,
        message_id: str,
        reaction: str,
        *,
        account_id: str | None = None,
        _account: dict | None = None,
    ) -> None:
        http = await self._get_http()
        server_url, password = await self._resolve_server(account_id, _account)

        payload = {
            "chatGuid": target_id,
            "reaction": reaction,
        }

        try:
            resp = await http.post(
                f"{server_url}/api/v1/message/{message_id}/reaction",
                json=payload,
                headers={"Password": password},
            )
            if resp.status_code >= 400:
                raise classify_http_error(resp.status_code, resp.text)
        except httpx.RequestError as e:
            raise IMessageSendError(f"Failed to send reaction: {e}") from e

    async def edit_message(
        self,
        target_id: str,
        message_id: str,
        content: str,
        *,
        thread_id: str | None = None,
        account_id: str | None = None,
        _account: dict | None = None,
    ) -> str | None:
        http = await self._get_http()
        server_url, password = await self._resolve_server(account_id, _account)

        formatted = self._format.format_for_imessage(content)
        payload = {"text": formatted}

        try:
            resp = await http.patch(
                f"{server_url}/api/v1/message/{message_id}",
                json=payload,
                headers={"Password": password},
            )
            if resp.status_code >= 400:
                raise classify_http_error(resp.status_code, resp.text)
            return message_id
        except httpx.RequestError as e:
            raise IMessageSendError(f"Failed to edit message: {e}") from e

    async def unsend_message(
        self,
        target_id: str,
        message_id: str,
        *,
        account_id: str | None = None,
        _account: dict | None = None,
    ) -> bool:
        http = await self._get_http()
        server_url, password = await self._resolve_server(account_id, _account)

        try:
            resp = await http.delete(
                f"{server_url}/api/v1/message/{message_id}",
                headers={"Password": password},
            )
            if resp.status_code >= 400:
                raise classify_http_error(resp.status_code, resp.text)
            return True
        except httpx.RequestError as e:
            raise IMessageSendError(f"Failed to unsend message: {e}") from e

    async def fetch_chat_history(
        self,
        chat_guid: str,
        *,
        limit: int = 50,
        before: int | None = None,
        after: int | None = None,
        account_id: str | None = None,
        _account: dict | None = None,
    ) -> list[dict]:
        http = await self._get_http()
        server_url, password = await self._resolve_server(account_id, _account)

        params: dict = {"limit": limit}
        if before:
            params["before"] = before
        if after:
            params["after"] = after

        try:
            resp = await http.get(
                f"{server_url}/api/v1/chat/{chat_guid}/message",
                params=params,
                headers={"Password": password},
            )
            if resp.status_code >= 400:
                raise classify_http_error(resp.status_code, resp.text)
            data = resp.json()
            return data.get("data", [])
        except httpx.RequestError as e:
            raise IMessageSendError(f"Failed to fetch chat history: {e}") from e

    async def send_typing_indicator(
        self, chat_guid: str,
        *, account_id: str | None = None, _account: dict | None = None,
    ) -> None:
        http = await self._get_http()
        server_url, password = await self._resolve_server(account_id, _account)
        try:
            await http.post(
                f"{server_url}/api/v1/chat/{chat_guid}/typing",
                headers={"Password": password},
            )
        except httpx.RequestError as e:
            logger.warning("Failed to send typing indicator: %s", e)

    async def send_read_receipt(
        self, chat_guid: str,
        *, account_id: str | None = None, _account: dict | None = None,
    ) -> None:
        http = await self._get_http()
        server_url, password = await self._resolve_server(account_id, _account)
        try:
            await http.post(
                f"{server_url}/api/v1/chat/{chat_guid}/readreceipt",
                headers={"Password": password},
            )
        except httpx.RequestError as e:
            logger.warning("Failed to send read receipt: %s", e)

    async def rename_group(
        self, chat_guid: str, name: str,
        *, account_id: str | None = None, _account: dict | None = None,
    ) -> bool:
        http = await self._get_http()
        server_url, password = await self._resolve_server(account_id, _account)
        try:
            resp = await http.patch(
                f"{server_url}/api/v1/chat/{chat_guid}/rename",
                json={"name": name},
                headers={"Password": password},
            )
            return resp.status_code < 400
        except httpx.RequestError as e:
            raise IMessageSendError(f"Failed to rename group: {e}") from e

    async def add_participant(
        self, chat_guid: str, handle: str,
        *, account_id: str | None = None, _account: dict | None = None,
    ) -> bool:
        http = await self._get_http()
        server_url, password = await self._resolve_server(account_id, _account)
        try:
            resp = await http.post(
                f"{server_url}/api/v1/chat/{chat_guid}/addparticipant",
                json={"address": handle},
                headers={"Password": password},
            )
            return resp.status_code < 400
        except httpx.RequestError as e:
            raise IMessageSendError(f"Failed to add participant: {e}") from e

    async def remove_participant(
        self, chat_guid: str, handle: str,
        *, account_id: str | None = None, _account: dict | None = None,
    ) -> bool:
        http = await self._get_http()
        server_url, password = await self._resolve_server(account_id, _account)
        try:
            resp = await http.post(
                f"{server_url}/api/v1/chat/{chat_guid}/removeparticipant",
                json={"address": handle},
                headers={"Password": password},
            )
            return resp.status_code < 400
        except httpx.RequestError as e:
            raise IMessageSendError(f"Failed to remove participant: {e}") from e

    async def leave_group(
        self, chat_guid: str,
        *, account_id: str | None = None, _account: dict | None = None,
    ) -> bool:
        http = await self._get_http()
        server_url, password = await self._resolve_server(account_id, _account)
        try:
            resp = await http.post(
                f"{server_url}/api/v1/chat/{chat_guid}/leave",
                headers={"Password": password},
            )
            return resp.status_code < 400
        except httpx.RequestError as e:
            raise IMessageSendError(f"Failed to leave group: {e}") from e

    async def list_chats(
        self, *, account_id: str | None = None, _account: dict | None = None,
    ) -> list[dict]:
        http = await self._get_http()
        server_url, password = await self._resolve_server(account_id, _account)
        try:
            resp = await http.get(
                f"{server_url}/api/v1/chat",
                headers={"Password": password},
            )
            if resp.status_code >= 400:
                raise classify_http_error(resp.status_code, resp.text)
            data = resp.json()
            return data.get("data", [])
        except httpx.RequestError as e:
            raise IMessageSendError(f"Failed to list chats: {e}") from e

    async def get_chat(
        self, chat_guid: str,
        *, account_id: str | None = None, _account: dict | None = None,
    ) -> dict | None:
        http = await self._get_http()
        server_url, password = await self._resolve_server(account_id, _account)
        try:
            resp = await http.get(
                f"{server_url}/api/v1/chat/{chat_guid}",
                headers={"Password": password},
            )
            if resp.status_code >= 400:
                raise classify_http_error(resp.status_code, resp.text)
            return resp.json()
        except httpx.RequestError as e:
            raise IMessageSendError(f"Failed to get chat: {e}") from e

    async def send_sms(
        self, target_id: str, content: str,
        *, account_id: str | None = None, _account: dict | None = None,
    ) -> None:
        http = await self._get_http()
        server_url, password = await self._resolve_server(account_id, _account)

        formatted = self._format.format_for_imessage(content)
        payload = {"text": formatted, "chatGuid": target_id, "method": "sms"}

        try:
            resp = await http.post(
                f"{server_url}/api/v1/message/text",
                json=payload,
                headers={"Password": password},
            )
            if resp.status_code >= 400:
                raise classify_http_error(resp.status_code, resp.text)
        except httpx.RequestError as e:
            raise IMessageSendError(f"Failed to send SMS: {e}") from e

    async def send_mention(
        self, chat_guid: str, message_id: str, mentions: list[str],
        *, account_id: str | None = None, _account: dict | None = None,
    ) -> None:
        http = await self._get_http()
        server_url, password = await self._resolve_server(account_id, _account)
        try:
            resp = await http.post(
                f"{server_url}/api/v1/message/{message_id}/sendmention",
                json={"mentions": mentions},
                headers={"Password": password},
            )
            if resp.status_code >= 400:
                raise classify_http_error(resp.status_code, resp.text)
        except httpx.RequestError as e:
            raise IMessageSendError(f"Failed to send mention: {e}") from e

    async def send_with_effect(
        self, chat_guid: str, message_id: str, effect: str,
        *, account_id: str | None = None, _account: dict | None = None,
    ) -> None:
        http = await self._get_http()
        server_url, password = await self._resolve_server(account_id, _account)
        valid_effects = {"slam", "loud", "gentle", "invisibleink"}
        if effect not in valid_effects:
            raise ValueError(f"Invalid effect: {effect}. Must be one of {valid_effects}")
        try:
            resp = await http.post(
                f"{server_url}/api/v1/message/{message_id}/sendwitheffect",
                json={"effect": effect},
                headers={"Password": password},
            )
            if resp.status_code >= 400:
                raise classify_http_error(resp.status_code, resp.text)
        except httpx.RequestError as e:
            raise IMessageSendError(f"Failed to send effect: {e}") from e

    async def send_with_subject(
        self, chat_guid: str, message_id: str, subject: str,
        *, account_id: str | None = None, _account: dict | None = None,
    ) -> None:
        http = await self._get_http()
        server_url, password = await self._resolve_server(account_id, _account)
        try:
            resp = await http.post(
                f"{server_url}/api/v1/message/{message_id}/sendwithsubject",
                json={"subject": subject},
                headers={"Password": password},
            )
            if resp.status_code >= 400:
                raise classify_http_error(resp.status_code, resp.text)
        except httpx.RequestError as e:
            raise IMessageSendError(f"Failed to send subject: {e}") from e

    async def list_handles(
        self, *, account_id: str | None = None, _account: dict | None = None,
    ) -> list[dict]:
        http = await self._get_http()
        server_url, password = await self._resolve_server(account_id, _account)
        resp = await http.get(
            f"{server_url}/api/v1/handle",
            headers={"Password": password},
        )
        if resp.status_code >= 400:
            raise classify_http_error(resp.status_code, resp.text)
        return resp.json().get("data", [])

    async def get_handle(
        self, address: str,
        *, account_id: str | None = None, _account: dict | None = None,
    ) -> dict | None:
        http = await self._get_http()
        server_url, password = await self._resolve_server(account_id, _account)
        resp = await http.get(
            f"{server_url}/api/v1/handle/{address}",
            headers={"Password": password},
        )
        if resp.status_code >= 400:
            raise classify_http_error(resp.status_code, resp.text)
        return resp.json()

    async def check_focus_status(
        self, *, account_id: str | None = None, _account: dict | None = None,
    ) -> dict:
        http = await self._get_http()
        server_url, password = await self._resolve_server(account_id, _account)
        resp = await http.get(
            f"{server_url}/api/v1/focus",
            headers={"Password": password},
        )
        if resp.status_code >= 400:
            raise classify_http_error(resp.status_code, resp.text)
        return resp.json()

    async def check_facetime_status(
        self, *, account_id: str | None = None, _account: dict | None = None,
    ) -> dict:
        http = await self._get_http()
        server_url, password = await self._resolve_server(account_id, _account)
        resp = await http.get(
            f"{server_url}/api/v1/facetime",
            headers={"Password": password},
        )
        if resp.status_code >= 400:
            raise classify_http_error(resp.status_code, resp.text)
        return resp.json()

    async def create_chat(
        self, handles: list[str],
        *, account_id: str | None = None, _account: dict | None = None,
    ) -> dict | None:
        http = await self._get_http()
        server_url, password = await self._resolve_server(account_id, _account)
        try:
            resp = await http.post(
                f"{server_url}/api/v1/chat/new",
                json={"addresses": handles},
                headers={"Password": password},
            )
            if resp.status_code >= 400:
                raise classify_http_error(resp.status_code, resp.text)
            return resp.json()
        except httpx.RequestError as e:
            raise IMessageSendError(f"Failed to create chat: {e}") from e

    async def delete_chat(
        self, chat_guid: str,
        *, account_id: str | None = None, _account: dict | None = None,
    ) -> bool:
        http = await self._get_http()
        server_url, password = await self._resolve_server(account_id, _account)
        try:
            resp = await http.delete(
                f"{server_url}/api/v1/chat/{chat_guid}",
                headers={"Password": password},
            )
            return resp.status_code < 400
        except httpx.RequestError as e:
            raise IMessageSendError(f"Failed to delete chat: {e}") from e

    async def mark_chat_read(
        self, chat_guid: str,
        *, account_id: str | None = None, _account: dict | None = None,
    ) -> bool:
        http = await self._get_http()
        server_url, password = await self._resolve_server(account_id, _account)
        try:
            resp = await http.post(
                f"{server_url}/api/v1/chat/{chat_guid}/markread",
                headers={"Password": password},
            )
            return resp.status_code < 400
        except httpx.RequestError as e:
            logger.warning("Failed to mark chat read: %s", e)
            return False

    async def mark_chat_unread(
        self, chat_guid: str,
        *, account_id: str | None = None, _account: dict | None = None,
    ) -> bool:
        http = await self._get_http()
        server_url, password = await self._resolve_server(account_id, _account)
        try:
            resp = await http.post(
                f"{server_url}/api/v1/chat/{chat_guid}/markunread",
                headers={"Password": password},
            )
            return resp.status_code < 400
        except httpx.RequestError as e:
            logger.warning("Failed to mark chat unread: %s", e)
            return False

    async def force_notify(
        self, message_id: str,
        *, account_id: str | None = None, _account: dict | None = None,
    ) -> bool:
        http = await self._get_http()
        server_url, password = await self._resolve_server(account_id, _account)
        try:
            resp = await http.post(
                f"{server_url}/api/v1/message/{message_id}/forcenotify",
                headers={"Password": password},
            )
            return resp.status_code < 400
        except httpx.RequestError as e:
            raise IMessageSendError(f"Failed to force notify: {e}") from e

    async def set_group_icon(
        self, chat_guid: str, icon_path: str,
        *, account_id: str | None = None, _account: dict | None = None,
    ) -> bool:
        http = await self._get_http()
        server_url, password = await self._resolve_server(account_id, _account)
        try:
            resp = await http.post(
                f"{server_url}/api/v1/chat/{chat_guid}/seticon",
                json={"path": icon_path},
                headers={"Password": password},
            )
            return resp.status_code < 400
        except httpx.RequestError as e:
            raise IMessageSendError(f"Failed to set group icon: {e}") from e

    async def get_digital_touch(
        self, message_id: str,
        *, account_id: str | None = None, _account: dict | None = None,
    ) -> dict | None:
        http = await self._get_http()
        server_url, password = await self._resolve_server(account_id, _account)
        resp = await http.get(
            f"{server_url}/api/v1/message/{message_id}/digitaltouch",
            headers={"Password": password},
        )
        if resp.status_code >= 400:
            raise classify_http_error(resp.status_code, resp.text)
        return resp.json()

    async def send_card(
        self,
        target_id: str,
        card_content: dict,
        *,
        reply_to_id: str | None = None,
        thread_id: str | None = None,
        account_id: str | None = None,
    ) -> str | None:
        return None

    async def edit_card(
        self,
        target_id: str,
        message_id: str,
        card_content: dict,
        *,
        thread_id: str | None = None,
        account_id: str | None = None,
    ) -> str | None:
        return None

    async def send_payload(self, ctx: object) -> object:
        return None

    async def send_poll(self, ctx: object) -> object:
        return None

    async def render_presentation(self, payload: object, presentation: object, ctx: object) -> object | None:
        return None

    async def pin_delivered_message(self, config: dict, target_ref: object, message_id: str, pin: object) -> None:
        pass

    async def before_deliver_payload(
        self, config: dict, target_ref: object, payload: object, hint: object | None = None
    ) -> None:
        pass

    async def after_deliver_payload(self, config: dict, target_ref: object, payload: object, results: list) -> None:
        pass

    def resolve_target(
        self,
        to: str | None = None,
        *,
        config: dict | None = None,
        allow_from: list[str] | None = None,
        account_id: str | None = None,
        mode: str | None = None,
    ) -> tuple[bool, str]:
        if not to:
            return False, "Target is required"
        return True, to

    def should_treat_delivered_text_as_visible(self, kind: str, text: str | None = None) -> bool:
        return True

    async def _resolve_server(self, account_id: str | None = None, _account: dict | None = None) -> tuple[str, str]:
        if _account:
            server_url = _account.get("server_url", "")
            password = _account.get("password", "")
            if server_url and password:
                return server_url, password
        server_url = os.getenv("IMESSAGE_SERVER_URL", "http://localhost:1234")
        password = os.getenv("IMESSAGE_SERVER_PASSWORD", "")
        return server_url, password