from dataclasses import dataclass, field


@dataclass
class MessageEvent:
    role: str
    content_type: str
    text_len: int
    has_cache_control: bool = False
    item_count: int = 0


@dataclass
class ToolSpec:
    name: str
    tool_type: str


@dataclass
class UsageStats:
    input_tokens: int = 0
    output_tokens: int = 0
    total_tokens: int = 0
    reasoning_tokens: int = 0
    cached_tokens: int = 0


@dataclass
class RequestMeta:
    provider: str
    line_number: int
    request_id: str
    session_id: str
    request_model: str
    time: str
    status_code: str
    status_name: str
    request_ready_time_ms: int
    request_end_time_ms: int
    total_cost_time_ms: int
    backend_first_request_time_ms: int = 0
    backend_first_response_time_ms: int = 0


@dataclass
class TraceRecord:
    meta: RequestMeta
    canonical_prompt: str = ""
    messages: list[MessageEvent] = field(default_factory=list)
    role_sequence: list[str] = field(default_factory=list)
    declared_tools: list[ToolSpec] = field(default_factory=list)
    usage: UsageStats = field(default_factory=UsageStats)
    raw_messages: list[dict] = field(default_factory=list)


@dataclass
class TraceFeatures:
    request_id: str
    session_id: str
    model: str
    status_code: str
    time: str
    message_count: int
    conversation_depth: int
    declared_tool_count: int
    assistant_msg_count: int
    tool_msg_count: int
    user_msg_count: int
    system_msg_count: int
    assistant_to_tool_count: int
    tool_to_assistant_count: int
    tool_to_tool_count: int
    assistant_to_user_count: int
    user_to_assistant_count: int
    max_consecutive_tool_msgs: int
    avg_tool_burst_len: float
    has_tool_loop: int
    input_tokens: int
    output_tokens: int
    total_tokens: int
    reasoning_tokens: int
    cached_tokens: int
    cache_hit_ratio: float
    uncached_prompt_tokens: int
    output_input_ratio: float
    latency_ms: int
    ms_per_input_token: float
    ms_per_output_token: float
    long_context: int
    high_cache: int
    tool_burst_alert: int
    tool_loop_alert: int
    slow_request: int = 0
    pattern_labels: list[str] = field(default_factory=list)