import { REST } from 'api/rest-axios'

export default {
  namespaced: true,

  // initial state
  state: {
    // items: [],
    authors: [],
    editionslist: [],
    editionsbyuuid: {},
    editionsuuids: [],
    corpusLoaded: false,
    numTocsItem: 0
  },

  // getters
  getters: {},

  // mutations
  mutations: {
    setAuthors (state, authors) {
      state.authors = authors
    },
    setEditionslist (state, editionslist) {
      state.editionslist = editionslist
    },
    setEditionsByUUID (state, editionlist) {
      for (var i = 0; i < editionlist.length; i++) {
        for (var j = 0; j < editionlist[i].editions.content.length; j++) {
          state.editionsbyuuid[editionlist[i].editions.content[j].uuid] = editionlist[i].editions.content[j]
          state.editionsuuids.push(editionlist[i].editions.content[j].uuid)
        }
      }
      console.log('corpus editionsbyuuid', state.editionsbyuuid)
    },
    setTocs (state, tocslist) {
      // console.log('setTocs', tocslist)
      tocslist.forEach((toc, i) => {
        state.editionsbyuuid[toc.uuid].toc = Array.isArray(toc.toc) ? toc.toc : [toc.toc]
      })
      // console.log('corpus editionsbyuuid', state.editionsbyuuid)
    },
    buildFlatTocsAndFilters (state) {
      let recurseToc = (state, eduuid, a) => {
        // console.log('recurseToc', a)
        a.forEach((item, i) => {
          if (item) {
            // flatToc
            state.editionsbyuuid[eduuid].flattoc.push(item.uuid)
            state.numTocsItem++

            // filters
            let indexes = item.indexes[0]
            for (const key in indexes) {
              // loop through indexes (objects, persons, places)
              if (Object.hasOwnProperty.call(indexes, key)) {
                indexes[key].forEach(element => {
                  // loop through index elements
                  if (!(element.uuid in state.editionsbyuuid[eduuid].indexes[key])) {
                    state.editionsbyuuid[eduuid].indexes[key][element.uuid] = element
                  }
                })
              }
            }

            // recursive loop
            if (item.children && item.children.length) {
              recurseToc(state, eduuid, item.children)
            }
          }
        })
      }
      state.editionsuuids.forEach((eduuid, i) => {
        // console.log('buildFlatTocsAndFilters', i, eduuid)
        state.editionsbyuuid[eduuid].flattoc = []
        state.editionsbyuuid[eduuid].indexes = {
          objects: {},
          persons: {},
          places: {}
        }
        recurseToc(state, eduuid, state.editionsbyuuid[eduuid].toc)
        console.log('buildFlatTocsAndFilters DONE',
          eduuid,
          `places: ${Object.keys(state.editionsbyuuid[eduuid].indexes['places']).length}`,
          `objects: ${Object.keys(state.editionsbyuuid[eduuid].indexes['objects']).length}`,
          `persons: ${Object.keys(state.editionsbyuuid[eduuid].indexes['persons']).length}`,
          state.editionsbyuuid[eduuid].indexes)
      })
      console.log('numTocsItem', state.numTocsItem)
    },
    setPaginations (state, paginationslist) {
      // console.log('setPaginations', paginationslist)
      paginationslist.forEach((pagination, i) => {
        state.editionsbyuuid[pagination.uuid].pagination = pagination.pagination
      })
      // console.log('corpus editionsbyuuid', state.editionsbyuuid)
    },
    setCorpusLoaded (state) {
      console.info('corpusLoaded')
      state.corpusLoaded = true
    }

  },

  // actions
  actions: {
    getCorpuses ({ dispatch, commit, state }) {
      return new Promise((resolve, reject) => {
        // get the list of corpuses (aka authors)
        dispatch('getAuthors')
          .then(({ data }) => {
            // console.log('getCorpuses authors data', data)
            commit('setAuthors', data.content)
            dispatch('getEditionsList', data.content)
              .then((editionslist) => {
                console.log('all texts returned: editionslist', editionslist)
                commit('setEditionslist', editionslist)
                commit('setEditionsByUUID', editionslist)

                dispatch('getEditionsTocs')
                  .then((tocslist) => {
                    console.log('all tocs returned: tocslist', tocslist)
                    commit('setTocs', tocslist)
                    commit('buildFlatTocsAndFilters')
                    dispatch('getEditionsPaginations')
                      .then((paginationslist) => {
                        console.log('all paginations returned: paginationslist', paginationslist)
                        commit('setPaginations', paginationslist)
                        commit('setCorpusLoaded')
                      })
                  })
              })
          })
      })
    },
    // async get authors
    getAuthors ({ dispatch, commit, state }) {
      return REST.get(`${window.apipath}/corpus`, {})
        // .then(({ data }) => {
        //   console.log('corpus getAuthors REST: data', data)
        //   commit('setAuthors', data.content)
        // })
        .catch((error) => {
          console.warn('Issue with getAuthors', error)
          Promise.reject(error)
        })
    },
    // async get editionslist
    getEditionsList ({ dispatch, commit, state }, authors) {
      return Promise.all(authors.map(function (author) {
        return REST.get(`${window.apipath}/corpus/` + author.uuid, {})
          .then(({ data }) => {
            // console.log('corpus getEditionsList REST: author, data', author, data)
            // work arround
            if (!Array.isArray(data.content)) {
              data.content = [data.content]
            }
            return {
              author: author,
              editions: data
            }
          })
          .catch((error) => {
            console.warn('Issue with getEditionsList', error)
            Promise.reject(error)
          })
      }))
    },
    // async get tocslist
    getEditionsTocs ({ dispatch, commit, state }) {
      return Promise.all(state.editionsuuids.map(function (uuid) {
        return REST.get(`${window.apipath}/texts/${uuid}/toc`, {})
          .then(({ data }) => {
            console.log('corpus getEditionsTocs REST: uuid, data', uuid, data)
            // work arround
            // if (!Array.isArray(data.content)) {
            //   data.content = [data.content]
            // }
            return {
              uuid: uuid,
              toc: data.content
            }
          })
          .catch((error) => {
            console.warn('Issue with getEditionsTocs', error)
            Promise.reject(error)
          })
      }))
    },
    // async get paginationslist
    getEditionsPaginations ({ dispatch, commit, state }) {
      return Promise.all(state.editionsuuids.map(function (uuid) {
        return REST.get(`${window.apipath}/texts/${uuid}/pagination`, {})
          .then(({ data }) => {
            // console.log('corpus getEditionsPaginations REST: uuid, data', uuid, data)
            // work arround
            // if (!Array.isArray(data.content)) {
            //   data.content = [data.content]
            // }
            return {
              uuid: uuid,
              pagination: data.content
            }
          })
          .catch((error) => {
            console.warn('Issue with getEditionsPaginations', error)
            Promise.reject(error)
          })
      }))
    }
  },
  methods: {
    testMethod () {
      console.log('testmethod')
    }
  }

}