import { useState, useCallback, useEffect, useRef, useMemo } from 'react';

export type LogLevel = 'info' | 'warn' | 'error';

export interface LogEntry {
  id: string;
  level: LogLevel;
  message: string;
  timestamp: Date;
  payload?: any;
}

const LOG_LEVELS: LogEntry['level'][] = ['info', 'warn', 'error'];

export function useLogger() {
  const [logs, setLogs] = useState<LogEntry[]>([]);
  const [isVisible, setIsVisible] = useState(false);
  const logsRef = useRef<LogEntry[]>([]);
  const [isDevelopment, setIsDevelopment] = useState(false);

  useEffect(() => {
    setIsDevelopment(
      process.env.NODE_ENV === 'development' ||
        window.location.hostname === 'localhost' ||
        window.location.hostname === '127.0.0.1'
    );
  }, []);

  useEffect(() => {
    logsRef.current = logs;
  }, [logs]);

  const addLog = useCallback(
    (level: LogEntry['level'], message: string, payload?: any) => {
      const newLog: LogEntry = {
        id: Math.random().toString(36).substring(2, 9),
        level,
        message,
        timestamp: new Date(),
        payload
      };

      setLogs((prevLogs) => [newLog, ...prevLogs]);

      return newLog.id;
    },
    []
  );

  const clearLogs = useCallback(() => {
    setLogs([]);
  }, []);

  const toggleVisibility = useCallback(() => {
    setIsVisible((prev) => !prev);
  }, []);

  const createLogMethod = useCallback(
    (level: LogEntry['level']) => (message: string, payload?: any) =>
      addLog(level, message, payload),
    [addLog]
  );

  const logMethods = useMemo(
    () =>
      LOG_LEVELS.reduce((methods, level) => {
        methods[level] = createLogMethod(level);
        return methods;
      }, {} as Record<LogEntry['level'], (message: string, payload?: any) => string>),
    [createLogMethod]
  );

  const hasError = useMemo(
    () => logs.some((log) => log.level === 'error'),
    [logs]
  );
  const hasWarning = useMemo(
    () => logs.some((log) => log.level === 'warn'),
    [logs]
  );

  return {
    logs,
    isVisible,
    toggleVisibility,
    clearLogs,
    ...logMethods,
    isDevelopment,
    hasError,
    hasWarning
  };
}