import { useSessionStore } from '../stores/sessionStore'
import type { MockUser } from '../stores/sessionStore'
import type { ItemResponse } from './types'
import { UserRole, WorkspaceType } from '../domain/enums'
import { getPermissions, getAccessibleWorkspaces } from '../lib/permissions'
import type { Permission } from '../lib/permissions'
import { queryClient } from '../lib/queryClient'

// Mock organizations for org switching
const MOCK_ORGANIZATIONS: { id: string; name: string }[] = [
  { id: 'org-wincasa', name: 'Wincasa AG' },
  { id: 'org-mobimo', name: 'Mobimo Management AG' },
  { id: 'org-ubs', name: 'UBS Asset Management RE' },
]

// Demo user presets per role
const DEMO_USERS: Record<UserRole, MockUser> = {
  [UserRole.SUPER_ADMIN]: {
    id: 'user-super',
    email: 'super@ideal-sharing.ch',
    name: 'Super Admin',
    role: UserRole.SUPER_ADMIN,
    organizationId: 'org-wincasa',
    organizationName: 'Wincasa AG',
    allowedWorkspaces: [WorkspaceType.SUPPLY, WorkspaceType.DEMAND],
  },
  [UserRole.ORGANIZATION_ADMIN]: {
    id: 'user-001',
    email: 'admin@ideal-sharing.ch',
    name: 'Admin User',
    role: UserRole.ORGANIZATION_ADMIN,
    organizationId: 'org-wincasa',
    organizationName: 'Wincasa AG',
    allowedWorkspaces: [WorkspaceType.SUPPLY, WorkspaceType.DEMAND],
  },
  [UserRole.PROPERTY_MANAGER]: {
    id: 'user-pm',
    email: 'pm@ideal-sharing.ch',
    name: 'Property Manager',
    role: UserRole.PROPERTY_MANAGER,
    organizationId: 'org-wincasa',
    organizationName: 'Wincasa AG',
    allowedWorkspaces: getAccessibleWorkspaces(UserRole.PROPERTY_MANAGER),
  },
  [UserRole.REVIEWER]: {
    id: 'user-rev',
    email: 'reviewer@ideal-sharing.ch',
    name: 'Reviewer',
    role: UserRole.REVIEWER,
    organizationId: 'org-wincasa',
    organizationName: 'Wincasa AG',
    allowedWorkspaces: getAccessibleWorkspaces(UserRole.REVIEWER),
  },
  [UserRole.OWNER_VIEWER]: {
    id: 'user-ov',
    email: 'owner@ideal-sharing.ch',
    name: 'Owner Viewer',
    role: UserRole.OWNER_VIEWER,
    organizationId: 'org-wincasa',
    organizationName: 'Wincasa AG',
    allowedWorkspaces: getAccessibleWorkspaces(UserRole.OWNER_VIEWER),
  },
  [UserRole.DEMAND_USER]: {
    id: 'user-dem',
    email: 'demand@ideal-sharing.ch',
    name: 'Demand User',
    role: UserRole.DEMAND_USER,
    organizationId: 'org-mobimo',
    organizationName: 'Mobimo Management AG',
    allowedWorkspaces: getAccessibleWorkspaces(UserRole.DEMAND_USER),
  },
}

export const authService = {
  async getCurrentUser(): Promise<ItemResponse<MockUser | null>> {
    const data = useSessionStore.getState().currentUser
    return { data }
  },

  async getCurrentOrganization(): Promise<ItemResponse<{ id: string; name: string } | null>> {
    const { activeOrganizationId } = useSessionStore.getState()
    const org = MOCK_ORGANIZATIONS.find((o) => o.id === activeOrganizationId) ?? null
    return { data: org }
  },

  async login(email: string, _password: string): Promise<ItemResponse<MockUser>> {
    const existing = Object.values(DEMO_USERS).find((u) => u.email === email)
    const user: MockUser = existing ?? {
      id: 'user-001',
      email,
      name: 'Admin User',
      role: UserRole.ORGANIZATION_ADMIN,
      organizationId: 'org-wincasa',
      organizationName: 'Wincasa AG',
      allowedWorkspaces: [WorkspaceType.SUPPLY, WorkspaceType.DEMAND],
    }
    useSessionStore.getState().login(user)
    return { data: user }
  },

  async logout(): Promise<ItemResponse<void>> {
    useSessionStore.getState().logout()
    // Clear all cached query data so stale data from the previous session
    // cannot leak to the next user who logs in on the same browser tab.
    queryClient.clear()
    return { data: undefined }
  },

  async isAuthenticated(): Promise<ItemResponse<boolean>> {
    const data = useSessionStore.getState().isAuthenticated
    return { data }
  },

  async switchDemoRole(role: UserRole): Promise<ItemResponse<MockUser>> {
    const user = DEMO_USERS[role]
    useSessionStore.getState().login(user)
    return { data: user }
  },

  async switchOrganization(organizationId: string): Promise<ItemResponse<void>> {
    const org = MOCK_ORGANIZATIONS.find((o) => o.id === organizationId)
    if (org) {
      const state = useSessionStore.getState()
      if (state.currentUser) {
        state.login({ ...state.currentUser, organizationId: org.id, organizationName: org.name })
      } else {
        state.switchOrganization(organizationId)
      }
    }
    return { data: undefined }
  },

  async getPermissions(user: MockUser): Promise<ItemResponse<Permission[]>> {
    return { data: getPermissions(user) }
  },
}