use std::collections::BTreeMap;

use chrono::{DateTime, Utc};
use serde::{Deserialize, Serialize};
use uuid::Uuid;

use crate::{RequestId, ScriptId};

/// One row in the `execution_logs` table. Same shape flows through the
/// `ExecutionLogSink` trait and the `GET /scripts/{id}/logs` response.
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ExecutionLog {
    pub id: Uuid,
    pub script_id: ScriptId,
    pub request_id: RequestId,

    pub request_path: String,
    pub request_headers: BTreeMap<String, String>,
    pub request_body: serde_json::Value,

    pub response_code: Option<u16>,
    pub response_body: Option<serde_json::Value>,

    /// `log::*` entries captured during the execution, serialized as a
    /// JSON array of `{timestamp, level, message, data}` objects.
    pub script_logs: serde_json::Value,

    pub duration_ms: u64,
    pub status: ExecutionStatus,
    pub created_at: DateTime<Utc>,
}

/// Matches the CHECK constraint on `execution_logs.status`. Keep the
/// serde rename in sync with the migration.
#[derive(Debug, Clone, Copy, Serialize, Deserialize, PartialEq, Eq)]
#[serde(rename_all = "snake_case")]
pub enum ExecutionStatus {
    Success,
    Error,
    Timeout,
    BudgetExceeded,
}

impl ExecutionStatus {
    #[must_use]
    pub fn as_str(self) -> &'static str {
        match self {
            Self::Success => "success",
            Self::Error => "error",
            Self::Timeout => "timeout",
            Self::BudgetExceeded => "budget_exceeded",
        }
    }
}