import _axios, { AxiosInstance } from 'axios'

export type ITypeLevel = 'character' | 'vocabulary'
export type IType = ITypeLevel | 'sentence'

export interface ILevelBrowserByType {
  whatToShow: string[]
}

export type ILevelBrowser = Record<ITypeLevel, ILevelBrowserByType>

export interface IUserLocalSettings {
  levelMin?: number
  level_browser?: ILevelBrowser
}

export interface IUserSettings extends IUserLocalSettings {
  identifier: string
  level: number
}

export interface IDictionaryLookup {
  id: string
  list: string[]
  reading: string[]
  audio: {
    mimetype?: string
    url: string
  }[]
  translation: string[]
  type: IType
  description: string
  tag: string[]
  level?: number
}

export interface IEntryLookup {
  entry: string
  sub: string[]
  sup: string[]
  variant: string[]
  visual: {
    entry: string
  }[]
  amalgamation: {
    entry: string
    type?: IType
  }[]
  component: {
    entry: string
    type?: IType
  }[]
}

export interface ILibrary {
  id: string
  title: string
  list: string[]
  type: IType
  description: string
  tag: string[]
  isShared?: boolean
}

export interface IQuiz {
  id: string
  type: IType
  direction: 'forward' | 'backward'
  entry: string
  nextReview?: string // format: date-time
  wrongStreak?: number
  hint: string
  mnemonic: string
}

export type ILookup<T> = T & {
  offset?: number
  limit?: number
}

export interface ILookupResult<T> {
  result: T[]
  count: number
}

class Api {
  axios: AxiosInstance
  _isAuthorized = true
  _user = ''

  constructor() {
    this.axios = _axios.create()
  }

  async setWanikaniApiKey(apiKey?: string) {
    const setApiKey = () => {
      if (apiKey) {
        this.axios.defaults.headers.common['Authorization'] = `Bearer ${apiKey}`
      } else {
        delete this.axios.defaults.headers.common['Authorization']
      }
    }

    setApiKey()

    return await this.isAuthorized().then((r) => {
      if (!r) {
        apiKey = ''
        setApiKey()
      }
      return r
    })
  }

  async isAuthorized(): Promise<boolean> {
    if (this._isAuthorized && !this._user) {
      const r = await this.user_getSettings({ select: ['identifier'] })
      if (r) {
        this._user = r.identifier
        this._isAuthorized = true
      }
    }

    return this._isAuthorized
  }

  async user_getSettings(params: { select: (keyof IUserSettings)[] }) {
    const r = await this.axios
      .get('/api/user', {
        params: {
          ...params,
          select: params.select.join(','),
        },
      })
      .then((r) => r.data as IUserSettings)
      .then((r) => ({
        ...r,
        levelMin: r.levelMin || 1,
      }))
      .catch(() => null)

    if (!r) {
      return null
    }

    return r
  }

  async user_updateSettings(u: IUserLocalSettings) {
    return await this.axios.patch('/api/user', u)
  }

  async quiz_getById(params: { id: string }) {
    return await this.axios
      .get('/api/quiz', { params })
      .then((r) => r.data as IQuiz)
      .catch(() => null)
  }

  async quiz_getManyByEntries(payload: {
    entries: string[]
    type: string
    direction?: string
  }) {
    return await this.axios.post('/api/quiz/getManyByEntries', payload).then(
      (r) =>
        r.data as {
          result: {
            id: string
            entry: string
          }[]
        }
    )
  }

  async quiz_getSrsLevel(payload: { entries: string[]; type: IType }) {
    return await this.axios.post('/api/quiz/getSrsLevel', payload).then(
      (r) =>
        r.data as {
          result: {
            entry: string
            srsLevel: number
          }[]
        }
    )
  }

  async quiz_updateSrsLevel(params: { id: string; df: number }) {
    return await this.axios.patch('/api/quiz/srsLevel', { params })
  }

  async quiz_create(payload: { entries: string[]; type: IType }) {
    return await this.axios.put('/api/quiz', payload).then(
      (r) =>
        r.data as {
          result: {
            ids: string[]
          }[]
        }
    )
  }

  async quiz_update(payload: Partial<IQuiz> & { id: string }) {
    return await this.axios.patch('/api/quiz', payload, {
      params: { id: payload.id },
    })
  }

  async quiz_deleteMany(params: { entries: string[]; type: IType }) {
    return await this.axios.post('/api/quiz/deleteMany', params)
  }

  async extra_getQuery(params: ILookup<{ q: string }>) {
    params.offset = params.offset || 0
    params.limit = params.limit || 5

    return await this.axios
      .get('/api/extra/q', { params })
      .then((r) => r.data as ILookupResult<IDictionaryLookup>)
  }

  async extra_create(payload: Omit<IDictionaryLookup, 'id'>) {
    return await this.axios
      .put('/api/extra', payload)
      .then((r) => r.data as { id: string })
  }

  async extra_update(payload: IDictionaryLookup) {
    return await this.axios.patch('/api/extra', payload, {
      params: { id: payload.id },
    })
  }

  async extra_delete(params: { id: string }) {
    return await this.axios.delete('/api/extra', {
      params,
    })
  }

  async character_getVocabulary(
    params: ILookup<{ entry: string; distinct?: 'id' }>
  ) {
    params.offset = params.offset || 0
    params.limit = params.limit || 5

    return await this.axios
      .get('/api/character/vocabulary', { params })
      .then((r) => r.data as ILookupResult<IDictionaryLookup>)
  }

  async character_getSentence(
    params: ILookup<{ entry: string; distinct?: 'id' }>
  ) {
    params.offset = params.offset || 0
    params.limit = params.limit || 5

    return await this.axios
      .get('/api/character/sentence', { params })
      .then((r) => r.data as ILookupResult<IDictionaryLookup>)
  }

  async vocabulary_getVocabulary(
    params: ILookup<{ entry: string; distinct?: 'id' }>
  ) {
    params.offset = params.offset || 0
    params.limit = params.limit || 5

    return await this.axios
      .get('/api/vocabulary/vocabulary', { params })
      .then((r) => r.data as ILookupResult<IDictionaryLookup>)
  }

  async vocabulary_getSentence(
    params: ILookup<{ entry: string; distinct?: 'id' }>
  ) {
    params.offset = params.offset || 0
    params.limit = params.limit || 5

    return await this.axios
      .get('/api/vocabulary/sentence', { params })
      .then((r) => r.data as ILookupResult<IDictionaryLookup>)
  }

  async all_getRandom(params: { type: IType }) {
    return await this.axios.get('/api/all/random', { params }).then(
      (r) =>
        r.data as {
          result: string
          level: number
        }
    )
  }

  async all_getQuery(
    params: ILookup<{ q: string; type?: IType; distinct?: 'id' }>
  ) {
    params.offset = params.offset || 0
    params.limit = params.limit || 5

    return await this.axios.get('/api/all/q', { params }).then(
      (r) =>
        r.data as ILookupResult<{
          entry: string
          type: IType
        }>
    )
  }

  async all_getLookup(
    params: ILookup<{ entry: string; type: IType; forced?: boolean }>
  ) {
    params.offset = params.offset || 0
    params.limit = params.limit || 5

    return await this.axios
      .get('/api/all', {
        params,
      })
      .then((r) => r.data as ILookupResult<IDictionaryLookup>)
  }

  async all_getComponent(params: { entry: string; type: IType }) {
    return await this.axios
      .get('/api/all/components', { params })
      .then((r) => r.data as IEntryLookup)
      .catch(() => null)
  }

  async all_tokenize(params: { entry: string }) {
    return await this.axios
      .get('/api/all/tokenize', {
        params,
      })
      .then(
        (r) =>
          r.data as {
            result: string[]
          }
      )
  }

  async all_getReading(params: { entry: string }) {
    return await this.axios
      .get('/api/all/reading', {
        params,
      })
      .then(
        (r) =>
          r.data as {
            result: string
          }
      )
  }

  async all_getMeaning(params: { entry: string }) {
    return await this.axios
      .get('/api/all/meaning', {
        params,
      })
      .then(
        (r) =>
          r.data as {
            result: {
              entry?: string
              meaning: string
            }[]
          }
      )
  }

  async library_getQuery(params: ILookup<{ q: string }>) {
    return await this.axios
      .get('/api/library/q', { params })
      .then((r) => r.data as ILookupResult<ILibrary>)
  }

  async library_getLevelList(payload: {
    type: ITypeLevel
    settings: ILevelBrowserByType
  }) {
    return await this.axios.post('/api/library/getLevelList', payload).then(
      (r) =>
        r.data as {
          result: {
            entry: string
            level: number
          }[]
        }
    )
  }

  async library_create(payload: Omit<ILibrary, 'id'>) {
    return await this.axios.put('/api/library', payload).then(
      (r) =>
        r.data as {
          id: string
        }
    )
  }

  async library_update(payload: ILibrary) {
    return await this.axios.patch('/api/library', payload, {
      params: { id: payload.id },
    })
  }

  async library_delete(params: { id: string }) {
    return await this.axios.delete('/api/library', { params })
  }
}

export const api = new Api()