from __future__ import annotations

import os
from typing import Any, Literal

from pydantic import BaseModel, Field


class CatchupConfig(BaseModel):
    enabled: bool = True
    max_age_minutes: int = 120
    per_run_limit: int = 50
    first_run_lookback_minutes: int = 30
    max_failure_retries: int = 10


class HealthMonitorConfig(BaseModel):
    enabled: bool = True


class NetworkConfig(BaseModel):
    dangerously_allow_private_network: bool = False


class MarkdownConfig(BaseModel):
    enabled: bool = True
    code_blocks: bool = True


class BlockStreamingCoalesceConfig(BaseModel):
    enabled: bool = False
    max_flush_interval_ms: int = 500


class GroupOverride(BaseModel):
    system_prompt: str = ""


class BlueBubblesConfig(BaseModel):
    enabled: bool = False
    name: str = ""
    server_url: str = Field(default="http://localhost:1234")
    password: str = Field(default="")
    request_timeout: float = 30.0
    send_timeout_ms: int = 30000
    reconnect_max_delay: float = 60.0

    dm_policy: Literal["open", "pairing", "allowlist", "blocklist"] = "pairing"
    group_policy: Literal["open", "pairing", "allowlist", "blocklist"] = "allowlist"
    dm_allow_from: list[str] = []
    group_allow_chats: list[str] = []
    group_allow_from: list[str] = []

    media_max_mb: int = 100
    enable_stickers: bool = True
    media_local_roots: list[str] = []

    streaming_mode: Literal["off", "partial", "block"] = "partial"
    edit_interval_ms: int = 500
    block_streaming: bool = False
    block_streaming_coalesce: BlockStreamingCoalesceConfig = Field(default_factory=BlockStreamingCoalesceConfig)

    text_chunk_limit: int = 4000
    chunk_mode: Literal["length", "newline"] = "newline"

    tapback_enabled: bool = True
    require_mention: bool = False

    ai_vision_enabled: bool = False
    streaming_typing_indicator: bool = True
    message_order_check: bool = True
    max_cache_entries: int = 2048

    send_read_receipts: bool = True

    dm_history_limit: int = 100

    coalesce_same_sender_dms: bool = False

    enrich_group_participants_from_contacts: bool = True

    allow_private_network: bool = False
    network: NetworkConfig = Field(default_factory=NetworkConfig)

    config_writes: bool = True

    webhook_path: str = "/bluebubbles/webhook"
    webhook_secret: str = ""

    markdown: MarkdownConfig = Field(default_factory=MarkdownConfig)

    capabilities: list[str] = []

    dms: dict[str, dict[str, Any]] = {}
    default_account: str = ""

    health_monitor: HealthMonitorConfig = Field(default_factory=HealthMonitorConfig)

    catchup: CatchupConfig = Field(default_factory=CatchupConfig)

    groups: dict[str, GroupOverride] = {}

    auth_strategy: Literal["header", "query", "both"] = "header"
    tts_prefer_caf: bool = True

    @classmethod
    def from_env(cls) -> BlueBubblesConfig:
        dm_raw = os.getenv("BLUEBUBBLES_DM_ALLOW_FROM", "")
        group_raw = os.getenv("BLUEBUBBLES_GROUP_ALLOW_CHATS", "")
        media_roots_raw = os.getenv("BLUEBUBBLES_MEDIA_LOCAL_ROOTS", "")

        return cls(
            enabled=os.getenv("BLUEBUBBLES_ENABLED", "false").lower() == "true",
            name=os.getenv("BLUEBUBBLES_NAME", ""),
            server_url=os.getenv("BLUEBUBBLES_SERVER_URL", "http://localhost:1234"),
            password=os.getenv("BLUEBUBBLES_SERVER_PASSWORD", ""),
            request_timeout=float(os.getenv("BLUEBUBBLES_REQUEST_TIMEOUT", "30.0")),
            send_timeout_ms=int(os.getenv("BLUEBUBBLES_SEND_TIMEOUT_MS", "30000")),
            reconnect_max_delay=float(os.getenv("BLUEBUBBLES_RECONNECT_MAX_DELAY", "60.0")),
            dm_policy=os.getenv("BLUEBUBBLES_DM_POLICY", "pairing"),
            group_policy=os.getenv("BLUEBUBBLES_GROUP_POLICY", "allowlist"),
            dm_allow_from=[x.strip() for x in dm_raw.split(",") if x.strip()] if dm_raw else [],
            group_allow_chats=[x.strip() for x in group_raw.split(",") if x.strip()] if group_raw else [],
            media_max_mb=int(os.getenv("BLUEBUBBLES_MEDIA_MAX_MB", "100")),
            enable_stickers=os.getenv("BLUEBUBBLES_ENABLE_STICKERS", "true").lower() == "true",
            media_local_roots=[x.strip() for x in media_roots_raw.split(",") if x.strip()] if media_roots_raw else [],
            streaming_mode=os.getenv("BLUEBUBBLES_STREAMING_MODE", "partial"),
            edit_interval_ms=int(os.getenv("BLUEBUBBLES_EDIT_INTERVAL_MS", "500")),
            tapback_enabled=os.getenv("BLUEBUBBLES_TAPBACK_ENABLED", "true").lower() == "true",
            require_mention=os.getenv("BLUEBUBBLES_REQUIRE_MENTION", "false").lower() == "true",
            send_read_receipts=os.getenv("BLUEBUBBLES_SEND_READ_RECEIPTS", "true").lower() == "true",
            text_chunk_limit=int(os.getenv("BLUEBUBBLES_TEXT_CHUNK_LIMIT", "4000")),
            block_streaming=os.getenv("BLUEBUBBLES_BLOCK_STREAMING", "false").lower() == "true",
            allow_private_network=os.getenv("BLUEBUBBLES_ALLOW_PRIVATE_NETWORK", "false").lower() == "true",
            webhook_path=os.getenv("BLUEBUBBLES_WEBHOOK_PATH", "/bluebubbles/webhook"),
            webhook_secret=os.getenv("BLUEBUBBLES_WEBHOOK_SECRET", ""),
            auth_strategy=os.getenv("BLUEBUBBLES_AUTH_STRATEGY", "header"),
            tts_prefer_caf=os.getenv("BLUEBUBBLES_TTS_PREFER_CAF", "true").lower() == "true",
        )