import axios from 'axios'
import type { AxiosInstance, InternalAxiosRequestConfig } from 'axios'
import { useAuthStore } from '@/stores/useAuthStore'
import { useNotificationStore } from '@/stores/useNotificationStore'
import { useOrganisationStore } from '@/stores/useOrganisationStore'

const apiClient: AxiosInstance = axios.create({
  baseURL: import.meta.env.VITE_API_URL,
  withCredentials: true,
  headers: {
    Accept: 'application/json',
    'Content-Type': 'application/json',
  },
  timeout: 30000,
})

apiClient.interceptors.request.use(
  (config: InternalAxiosRequestConfig) => {
    const authStore = useAuthStore()
    const orgStore = useOrganisationStore()

    if (authStore.token) {
      config.headers.Authorization = `Bearer ${authStore.token}`
    }

    if (orgStore.activeOrganisationId) {
      config.headers['X-Organisation-Id'] = orgStore.activeOrganisationId
    }

    if (import.meta.env.DEV) {
      console.log(`🚀 ${config.method?.toUpperCase()} ${config.url}`, config.data)
    }

    return config
  },
  error => Promise.reject(error),
)

apiClient.interceptors.response.use(
  response => {
    if (import.meta.env.DEV) {
      console.log(`✅ ${response.status} ${response.config.url}`, response.data)
    }

    return response
  },
  error => {
    if (import.meta.env.DEV) {
      console.error(`❌ ${error.response?.status} ${error.config?.url}`, error.response?.data)
    }

    const status = error.response?.status
    const notificationStore = useNotificationStore()

    if (status === 401) {
      const authStore = useAuthStore()

      // During initialization, let initialize() handle the 401 — skip redirect
      if (authStore.isInitialized) {
        authStore.logout()

        if (typeof window !== 'undefined' && window.location.pathname !== '/login') {
          window.location.href = '/login'
        }
      }
    }
    else if (status === 403) {
      notificationStore.show('You don\'t have permission for this action.', 'error')
    }
    else if (status === 404) {
      notificationStore.show('The requested item was not found.', 'warning')
    }
    else if (status === 422) {
      // Validation errors — pass through to calling component
    }
    else if (status === 503) {
      notificationStore.show('Service temporarily unavailable. Please try again later.', 'error')
    }
    else if (status && status >= 500) {
      notificationStore.show('An unexpected error occurred. Please try again later.', 'error')
    }
    else if (!error.response) {
      // Network error — no response received
      notificationStore.show('Unable to connect to the server. Check your internet connection.', 'error')
    }

    return Promise.reject(error)
  },
)

export { apiClient }