"""Centralized environment configuration for cptr.

All environment variable reads go here. Import from this module
instead of reading os.environ directly.
"""

from __future__ import annotations

import os
from pathlib import Path

# ── Data directory ──────────────────────────────────────────
# Where cptr stores its database, config, and user data.
# Default: ~/.cptr
DATA_DIR = Path(os.environ.get("CPTR_DATA_DIR", str(Path.home() / ".cptr")))
CONFIG_FILE = DATA_DIR / "config.toml"
DB_FILE = DATA_DIR / "app.db"

# ── Startup token ───────────────────────────────────────────
# One-time token for first-time setup. Set by CLI, consumed by app.
STARTUP_TOKEN: str | None = os.environ.pop("CPTR_STARTUP_TOKEN", None)

# ── Chat settings ───────────────────────────────────────────
CHAT_MAX_ITERATIONS = int(os.environ.get("CHAT_MAX_ITERATIONS", "2048"))
ENABLE_CHAT_RECONCILE_ON_STARTUP: bool = os.environ.get(
    "ENABLE_CHAT_RECONCILE_ON_STARTUP", "true"
).lower() in ("true", "1", "yes")
CHAT_TOOL_MAX_CHARS = int(os.environ.get("CHAT_TOOL_MAX_CHARS", "50000"))
CHAT_TOOL_COMMAND_MAX_CHARS = int(os.environ.get("CHAT_TOOL_COMMAND_MAX_CHARS", "8000"))
CHAT_COMPACT_TOKEN_THRESHOLD = int(os.environ.get("CHAT_COMPACT_TOKEN_THRESHOLD", "80000"))

# ── Execute timeout ─────────────────────────────────────────
# Default wait (seconds) for run_command / check_task when the caller
# doesn't pass an explicit wait value.  None = return immediately.
EXECUTE_TIMEOUT: float | None = None
_execute_timeout = os.environ.get("CPTR_EXECUTE_TIMEOUT")
if _execute_timeout is not None:
    EXECUTE_TIMEOUT = float(_execute_timeout)

# ── AI stream settings ──────────────────────────────────────
STREAM_CONNECT_TIMEOUT_SECONDS = float(os.environ.get("CPTR_STREAM_CONNECT_TIMEOUT", "30"))
STREAM_READ_TIMEOUT_SECONDS = float(os.environ.get("CPTR_STREAM_READ_TIMEOUT", "300"))
STREAM_WRITE_TIMEOUT_SECONDS = float(os.environ.get("CPTR_STREAM_WRITE_TIMEOUT", "600"))

# ── Automation scheduler ────────────────────────────────────
AUTOMATION_POLL_INTERVAL = int(os.environ.get("AUTOMATION_POLL_INTERVAL", "10"))

# ── CORS ────────────────────────────────────────────────────
# Socket.IO CORS allowed origins.
# Default → "*" (allow all origins)
# Comma-separated list → allow specific origins only
#   e.g. "https://example.com,https://app.example.com"
_cors_raw = os.environ.get("CPTR_CORS_ALLOWED_ORIGINS", "*")
if _cors_raw.strip() == "*":
    CORS_ALLOWED_ORIGINS = "*"
else:
    CORS_ALLOWED_ORIGINS = [o.strip() for o in _cors_raw.split(",") if o.strip()] or "*"