import { beforeEach, describe, expect, it } from 'vitest'
import type { NavigationEntry } from '../../src/api/types'
import {
  activeEntry,
  firstControllerPath,
  homePath,
  loadNavigation,
  navigation,
  railEntries,
  setNavigation,
  useNavigation,
} from '../../src/state/useNavigation'
import { clone, navigationFixture } from '../fixtures/typed'
import { API, mockApi, requestsTo, resetState } from '../helpers'

function entry(code: string, order: number, controllers: string[], controller = controllers[0] ?? 'x.y.z'): NavigationEntry {
  return {
    code,
    label: code,
    icon: 'tags',
    order,
    controller,
    sideMenu: controllers.map((id, index) => ({ code: `${code}-${index}`, label: id, icon: 'tags', order: 0, controller: id, sideMenu: [] })),
  }
}

beforeEach(() => {
  resetState()
})

describe('loadNavigation', () => {
  it('stores the server-filtered entries', async () => {
    const calls = mockApi({ [`GET ${API}/navigation`]: { body: navigationFixture } })
    expect(await loadNavigation()).toHaveLength(3)
    expect(navigation.value.map((item) => item.code)).toEqual(['demo', 'tools', 'hidden'])
    expect(requestsTo(calls, 'GET', `${API}/navigation`)).toHaveLength(1)
  })

  it('empties the navigation when the request fails', async () => {
    setNavigation(navigationFixture.data)
    mockApi({ [`GET ${API}/navigation`]: { status: 403, body: { error: { code: 'forbidden', message: 'x', details: {} } } } })
    expect(await loadNavigation()).toEqual([])
    expect(navigation.value).toEqual([])
  })
})

describe('rail entries', () => {
  it('omits plugins without a permitted side-menu item and orders by order, then position', () => {
    setNavigation([entry('b', 20, ['a.b.c']), entry('empty', 1, []), entry('a', 10, ['a.a.c']), entry('c', 20, ['a.c.c'])])
    expect(railEntries.value.map((item) => item.code)).toEqual(['a', 'b', 'c'])
  })

  it('opens the first valid side-menu controller, else the entry controller', () => {
    expect(firstControllerPath(entry('p', 0, ['bad id', 'acme.demo.gadgets']))).toBe('/acme/demo/gadgets')
    expect(firstControllerPath({ ...entry('p', 0, ['bad id']), controller: 'acme.demo.widgets' })).toBe('/acme/demo/widgets')
    expect(firstControllerPath({ ...entry('p', 0, []), controller: 'nope' })).toBeNull()
  })

  it('finds the active plugin by its own controller or any side-menu controller', () => {
    setNavigation(navigationFixture.data)
    expect(activeEntry('acme', 'demo')?.code).toBe('demo')
    expect(activeEntry('acme', 'tools')?.code).toBe('tools')
    expect(activeEntry('acme', 'hidden')).toBeNull()
    expect(activeEntry('acme', 'missing')).toBeNull()

    const shared = clone(navigationFixture.data)
    shared[0]!.controller = 'other.root.index'
    setNavigation(shared)
    expect(activeEntry('acme', 'demo')?.code).toBe('demo')
  })

  it('goes home to the first rail plugin, skipping plugins without a valid path', () => {
    expect(homePath()).toBeNull()
    setNavigation([{ ...entry('broken', 1, ['bad id']), controller: 'bad' }, entry('ok', 2, ['acme.tools.hammers'])])
    expect(homePath()).toBe('/acme/tools/hammers')
    setNavigation(navigationFixture.data)
    expect(homePath()).toBe('/acme/demo/widgets')
    expect(useNavigation().homePath).toBe(homePath)
  })
})