"""Stable backend protocol enums.

Database columns and JSON payloads continue to store the enum string values.
Configurable identifiers, user-authored values, and open-ended taxonomies do
not belong in this module.
"""

from __future__ import annotations

import logging
from enum import StrEnum
from typing import TypeVar

logger = logging.getLogger(__name__)

EnumT = TypeVar("EnumT", bound=StrEnum)


def parse_enum(enum_type: type[EnumT], value: object, default: EnumT) -> EnumT:
    """Parse an external value without breaking reads of legacy data."""

    if value is None or str(value).strip() == "":
        return default
    if isinstance(value, enum_type):
        return value
    try:
        return enum_type(str(value).strip().lower())
    except (TypeError, ValueError):
        logger.warning(
            "Unknown %s value %r; falling back to %s",
            enum_type.__name__,
            value,
            default.value,
        )
        return default


class NewsImportanceLevel(StrEnum):
    LOW = "low"
    MEDIUM = "medium"
    HIGH = "high"
    CRITICAL = "critical"


class BreakingLevel(StrEnum):
    NONE = "none"
    WATCH = "watch"
    BREAKING = "breaking"
    CRITICAL = "critical"


class BreakingScope(StrEnum):
    REGIONAL = "regional"
    GLOBAL = "global"


class BreakingSource(StrEnum):
    RULES = "rules"
    AI = "ai"
    MANUAL = "manual"
    MULTI_SOURCE = "multi_source"


class NewsSourceType(StrEnum):
    RSS = "rss"
    ATOM = "atom"
    AGGREGATED = "aggregated"
    REFERENCE = "reference"
    MANUAL = "manual"


class NewsEnrichmentStatus(StrEnum):
    PENDING = "pending"
    QUEUED = "queued"
    ATTEMPTED = "attempted"
    SUCCESS = "success"
    CONTENT_ONLY = "content_only"
    LOCATION_ONLY = "location_only"
    UNAVAILABLE = "unavailable"
    PROVIDER_ERROR = "provider_error"
    PARSE_ERROR = "parse_error"
    NO_RESULT = "no_result"


class NewsMarketImpact(StrEnum):
    NONE = "none"
    SECTOR = "sector"
    NATIONAL = "national"
    GLOBAL = "global"


class NewsTaggingSource(StrEnum):
    RULES = "rules"
    AI = "ai"
    MANUAL = "manual"


class JobType(StrEnum):
    COLLECT = "collect"
    CLEAR_DATA = "clear_data"
    CLEAR_CACHE = "clear_cache"
    EARTH_REFRESH = "earth_refresh"


class JobStatus(StrEnum):
    QUEUED = "queued"
    RUNNING = "running"
    CANCELLING = "cancelling"
    SUCCESS = "success"
    FAILED = "failed"
    CANCELLED = "cancelled"


class RollbackPolicy(StrEnum):
    KEEP_COMMITTED_BATCHES = "keep_committed_batches"


class MappingValidationStatus(StrEnum):
    DRAFT = "draft"
    VALID = "valid"
    INVALID = "invalid"


class SnapshotStatus(StrEnum):
    RUNNING = "running"
    SUCCESS = "success"
    FAILED = "failed"
    CANCELLED = "cancelled"


class DatasourceRunStatus(StrEnum):
    RUNNING = "running"
    NOT_RUN = "not_run"
    COLLECTED = "collected"
    UNCOLLECTED = "uncollected"


class ProviderApi(StrEnum):
    ANTHROPIC_MESSAGES = "anthropic-messages"
    OPENAI_COMPLETIONS = "openai-completions"
    OLLAMA_GENERATE = "ollama-generate"


class PlaygroundMessageRole(StrEnum):
    SYSTEM = "system"
    USER = "user"
    ASSISTANT = "assistant"
    TOOL = "tool"


class PlaygroundMessageKind(StrEnum):
    MESSAGE = "message"
    THINKING = "thinking"
    ERROR = "error"
    STATUS = "status"


class PlaygroundMessageStatus(StrEnum):
    PENDING = "pending"
    THINKING = "thinking"
    ANSWERING = "answering"
    DONE = "done"
    FAILED = "failed"
    CANCELLED = "cancelled"
    ERROR = "error"
    STOPPED = "stopped"


class OtpPurpose(StrEnum):
    REGISTER = "register"
    VERIFY_EMAIL = "verify_email"
    RESET_PASSWORD = "reset_password"


class UserRole(StrEnum):
    VIEWER = "viewer"
    ADMIN = "admin"
    SUPER_ADMIN = "super_admin"


class AlertSeverity(StrEnum):
    CRITICAL = "critical"
    WARNING = "warning"
    INFO = "info"


class AlertStatus(StrEnum):
    ACTIVE = "active"
    ACKNOWLEDGED = "acknowledged"
    RESOLVED = "resolved"


class BGPStatus(StrEnum):
    ACTIVE = "active"
    ACKNOWLEDGED = "acknowledged"
    RESOLVED = "resolved"


class LogLevel(StrEnum):
    ALL = "all"
    ERROR = "error"
    WARNING = "warning"
    INFO = "info"
    DEBUG = "debug"


class ConnectionState(StrEnum):
    DISCONNECTED = "disconnected"
    CONNECTING = "connecting"
    CONNECTED = "connected"
    ERROR = "error"


class AuthType(StrEnum):
    NONE = "none"
    BEARER = "bearer"
    API_KEY = "api_key"
    BASIC = "basic"


class TVSourceType(StrEnum):
    IFRAME = "iframe"
    HLS = "hls"
    VIDEO = "video"
    EXTERNAL = "external"
    YOUTUBE = "youtube"