"""Cayce Ops — configuration.

All configuration comes from environment variables prefixed with ``CAYCE_OPS_``.
No config files, no defaults that touch the network. See .env.example for the
full list with placeholder values.
"""

from __future__ import annotations

import os
from dataclasses import dataclass, field


def _bool(name: str, default: bool = False) -> bool:
    raw = os.environ.get(name)
    if raw is None:
        return default
    return raw.strip().lower() in {"1", "true", "yes", "on"}


def _int(name: str, default: int) -> int:
    raw = os.environ.get(name)
    if raw is None or not raw.strip():
        return default
    return int(raw)


def _list(name: str, default: list[str] | None = None) -> list[str]:
    raw = os.environ.get(name)
    if raw is None or not raw.strip():
        return list(default or [])
    return [item.strip() for item in raw.split(",") if item.strip()]


@dataclass(frozen=True)
class Config:
    """Snapshot of the process environment. Constructed once per CLI invocation."""

    # --- core ---
    database_url: str = field(
        default_factory=lambda: os.environ.get(
            "CAYCE_OPS_DATABASE_URL", "sqlite:///cayce-ops.db"
        )
    )
    autonomous_mode: bool = field(
        default_factory=lambda: _bool("CAYCE_OPS_AUTONOMOUS_MODE", False)
    )
    log_level: str = field(
        default_factory=lambda: os.environ.get("CAYCE_OPS_LOG_LEVEL", "INFO")
    )
    state_dir: str = field(
        default_factory=lambda: os.environ.get("CAYCE_OPS_STATE_DIR", ".")
    )
    media_dir: str = field(
        default_factory=lambda: os.environ.get("CAYCE_OPS_MEDIA_DIR", "./media")
    )

    # --- scanner ---
    scanner_sources: str = field(
        default_factory=lambda: os.environ.get("CAYCE_OPS_SCANNER_SOURCES", "[]")
    )
    scanner_keywords: list[str] = field(
        default_factory=lambda: _list(
            "CAYCE_OPS_SCANNER_KEYWORDS",
            ["affiliate", "partnership", "bitcoin", "lightning", "travel"],
        )
    )
    scanner_user_agent: str = field(
        default_factory=lambda: os.environ.get(
            "CAYCE_OPS_SCANNER_USER_AGENT", "cayce-ops-scanner/0.1"
        )
    )

    # --- executor ---
    autonomous_kinds: list[str] = field(
        default_factory=lambda: _list("CAYCE_OPS_AUTONOMOUS_KINDS", [])
    )
    autonomous_daily_cap: int = field(
        default_factory=lambda: _int("CAYCE_OPS_AUTONOMOUS_DAILY_CAP", 0)
    )
    max_attempts: int = field(
        default_factory=lambda: _int("CAYCE_OPS_MAX_ATTEMPTS", 2)
    )
    enable_http_actions: bool = field(
        default_factory=lambda: _bool("CAYCE_OPS_ENABLE_HTTP_ACTIONS", False)
    )

    # --- mail ---
    imap_host: str = field(
        default_factory=lambda: os.environ.get("CAYCE_OPS_IMAP_HOST", "")
    )
    imap_port: int = field(default_factory=lambda: _int("CAYCE_OPS_IMAP_PORT", 993))
    imap_user: str = field(
        default_factory=lambda: os.environ.get("CAYCE_OPS_IMAP_USER", "")
    )
    imap_password: str = field(
        default_factory=lambda: os.environ.get("CAYCE_OPS_IMAP_PASSWORD", "")
    )
    imap_mailbox: str = field(
        default_factory=lambda: os.environ.get("CAYCE_OPS_IMAP_MAILBOX", "INBOX")
    )
    smtp_host: str = field(
        default_factory=lambda: os.environ.get("CAYCE_OPS_SMTP_HOST", "")
    )
    smtp_port: int = field(default_factory=lambda: _int("CAYCE_OPS_SMTP_PORT", 587))
    smtp_user: str = field(
        default_factory=lambda: os.environ.get("CAYCE_OPS_SMTP_USER", "")
    )
    smtp_password: str = field(
        default_factory=lambda: os.environ.get("CAYCE_OPS_SMTP_PASSWORD", "")
    )
    mail_from: str = field(
        default_factory=lambda: os.environ.get("CAYCE_OPS_MAIL_FROM", "")
    )

    # --- llm ---
    llm_provider: str = field(
        default_factory=lambda: os.environ.get("CAYCE_OPS_LLM_PROVIDER", "null")
    )
    llm_model: str = field(
        default_factory=lambda: os.environ.get("CAYCE_OPS_LLM_MODEL", "")
    )
    llm_base_url: str = field(
        default_factory=lambda: os.environ.get(
            "CAYCE_OPS_LLM_BASE_URL", "https://api.openai.com/v1"
        )
    )
    llm_api_key: str = field(
        default_factory=lambda: os.environ.get("CAYCE_OPS_LLM_API_KEY", "")
    )
    llm_review_threshold: float = field(
        default_factory=lambda: float(
            os.environ.get("CAYCE_OPS_LLM_REVIEW_THRESHOLD", "0.7")
        )
    )

    # --- publisher / nostr ---
    nostr_private_key: str = field(
        default_factory=lambda: os.environ.get("CAYCE_OPS_NOSTR_PRIVATE_KEY", "")
    )
    nostr_relays: list[str] = field(
        default_factory=lambda: _list("CAYCE_OPS_NOSTR_RELAYS", [])
    )
    enable_facebook: bool = field(
        default_factory=lambda: _bool("CAYCE_OPS_ENABLE_FACEBOOK", False)
    )
    facebook_page_token: str = field(
        default_factory=lambda: os.environ.get("CAYCE_OPS_FACEBOOK_PAGE_TOKEN", "")
    )
    enable_instagram: bool = field(
        default_factory=lambda: _bool("CAYCE_OPS_ENABLE_INSTAGRAM", False)
    )
    instagram_user_id: str = field(
        default_factory=lambda: os.environ.get("CAYCE_OPS_INSTAGRAM_USER_ID", "")
    )

    # --- monitor ---
    monitor_output: str = field(
        default_factory=lambda: os.environ.get(
            "CAYCE_OPS_MONITOR_OUTPUT", "./status.html"
        )
    )


def load() -> Config:
    """Build the process Config snapshot."""
    return Config()