/**
 * Incident API - Shared configuration and helper functions
 */

// =============================================================================
// CONFIGURATION
// =============================================================================

export const INCIDENTS_API_BASE = process.env.NEXT_PUBLIC_SDK_API_URL || 'http://localhost:8093'
export const API_TIMEOUT = 30000 // 30 seconds

// =============================================================================
// HELPER FUNCTIONS
// =============================================================================

export function getTenantId(): string {
  if (typeof window !== 'undefined') {
    return localStorage.getItem('bp_tenant_id') || 'default-tenant'
  }
  return 'default-tenant'
}

export function getAuthHeaders(): HeadersInit {
  const headers: HeadersInit = {
    'Content-Type': 'application/json',
    'X-Tenant-ID': getTenantId()
  }

  if (typeof window !== 'undefined') {
    const token = localStorage.getItem('authToken')
    if (token) {
      headers['Authorization'] = `Bearer ${token}`
    }
    const userId = localStorage.getItem('bp_user_id')
    if (userId) {
      headers['X-User-ID'] = userId
    }
  }

  return headers
}

export async function fetchWithTimeout<T>(
  url: string,
  options: RequestInit = {},
  timeout: number = API_TIMEOUT
): Promise<T> {
  const controller = new AbortController()
  const timeoutId = setTimeout(() => controller.abort(), timeout)

  try {
    const response = await fetch(url, {
      ...options,
      signal: controller.signal,
      headers: {
        ...getAuthHeaders(),
        ...options.headers
      }
    })

    if (!response.ok) {
      const errorBody = await response.text()
      let errorMessage = `HTTP ${response.status}: ${response.statusText}`
      try {
        const errorJson = JSON.parse(errorBody)
        errorMessage = errorJson.error || errorJson.message || errorMessage
      } catch {
        // Keep the HTTP status message
      }
      throw new Error(errorMessage)
    }

    // Handle empty responses
    const contentType = response.headers.get('content-type')
    if (contentType && contentType.includes('application/json')) {
      return response.json()
    }

    return {} as T
  } finally {
    clearTimeout(timeoutId)
  }
}