import { jugglService } from "@/services/juggl.service.js";

export const juggl = {
  state: {
    apiUrl: "https://juggl.giller.dev/api",
    projects: [],
    records: [],
    tags: [],
    statistics: [],
    user: undefined,
    auth: undefined,
    recordsLimit: 0
  },
  mutations: {
    setProjects(state, projects) {
      state.projects = projects;
    },
    setRecords(state, records) {
      state.records = records;
    },
    setTags(state, tags) {
      state.tags = tags;
    },
    setStatistics(state, statistics) {
      state.statistics = statistics;
    },
    setRecordsLimit(state, limit) {
      state.recordsLimit = limit;
    },
    setUser(state, user) {
      state.user = user;
    },
    logout(state) {
      state.auth = undefined;
      localStorage.removeItem("apiKey");
      localStorage.removeItem("userId");
    },
    login(state, { apiKey, userId }) {
      state.auth = { apiKey: apiKey, userId: userId };
      localStorage.setItem("apiKey", apiKey);
      localStorage.setItem("userId", userId);
    }
  },
  getters: {
    runningRecords: state => {
      return Object.values(state.records).filter(record => record.running);
    },
    finishedRecords: state => {
      return Object.values(state.records).filter(record => !record.running);
    },
    getFilteredRecords: (state, getters) => ({
      running = undefined,
      projectVisible = undefined,
      records = undefined
    }) => {
      if (records == undefined) {
        records = getters.records;
      }

      var visibleProjects = getters.visibleProjects;
      var visibleIds = [];
      Object.values(visibleProjects)
        .filter(p => p.visible)
        .forEach(p => {
          visibleIds.push(p.project_id);
        });

      return Object.values(records).filter(rec => {
        if (running !== undefined && running !== rec.running) {
          return false;
        }
        var recProjectVisible = visibleIds.includes(rec.project_id);
        if (
          projectVisible !== undefined &&
          projectVisible !== recProjectVisible
        ) {
          return false;
        }
        return true;
      });
    },
    getFilteredStatistics: (state, getters) => ({
      projectVisible = undefined
    }) => {
      return Object.values(getters.statistics).filter(statistic => {
        if (
          projectVisible !== undefined &&
          statistic.visible !== projectVisible
        ) {
          return false;
        }
        return true;
      });
    },
    auth: state => state.auth,
    apiUrl: state => state.apiUrl,
    user: state => state.user,
    isLoggedIn: state => !!state.auth,
    statistics: state => state.statistics,
    records: state => state.records,
    projects: state => state.projects,
    tags: state => state.tags,
    projectIds: state => {
      var projectIds = [];
      Object.values(state.projects).forEach(project => {
        projectIds.push(project.project_id);
      });
      return projectIds;
    },
    runningProjectIds: (state, getters) => {
      var runningProjectIds = [];
      Object.values(getters.runningRecords).forEach(record => {
        var projectId = record.project_id;
        if (runningProjectIds.includes(runningProjectIds) === false) {
          runningProjectIds.push(projectId);
        }
      });
      return runningProjectIds;
    },
    finishedProjectIds: (state, getters) => {
      var runningProjectIds = getters.runningProjectIds;
      return getters.projectIds.filter(id => !runningProjectIds.includes(id));
    },
    finishedProjects: (state, getters) => {
      return getters.getFilteredProjects({ finished: true });
    },
    visibleProjects: (state, getters) => {
      return getters.getFilteredProjects({ visible: true });
    },
    runningProjects: (state, getters) => {
      var ids = getters.runningProjectIds;
      return Object.values(state.projects).filter(project =>
        ids.includes(project.project_id)
      );
    },
    getProjectById: (state, getters) => id => {
      return Object.values(getters.projects).find(
        project => project.project_id === id
      );
    },
    getFilteredProjects: (state, getters) => ({
      finished = undefined,
      visible = undefined,
      projects = undefined
    }) => {
      if (projects == undefined) {
        projects = getters.projects;
      }

      var runningIds = getters.runningProjectIds;
      return Object.values(projects).filter(project => {
        var projectFinished = !runningIds.includes(project.project_id);

        if (finished !== undefined && finished !== projectFinished) {
          return false;
        }
        if (visible !== undefined && visible !== project.visible) {
          return false;
        }
        return true;
      });
    },
    getFilteredTags: (state, getters) => ({
      visible = undefined,
      tags = undefined
    }) => {
      if (tags == undefined) {
        tags = getters.tags;
      }

      return Object.values(tags).filter(tag => {
        if (visible != undefined && visible !== tag.visible) {
          return false;
        }
        return true;
      });
    },
    getTagById: (state, getters) => id => {
      return Object.values(getters.tags).find(tag => tag.record_tag_id === id);
    },
    getRecordById: (state, getters) => id => {
      return Object.values(getters.records).find(
        record => record.record_id === id
      );
    },
    getRecordsExceptId: (state, getters) => id => {
      return Object.values(getters.records).filter(
        record => record.record_id !== id
      );
    },
    getProjectsExceptId: (state, getters) => id => {
      return Object.values(getters.projects).filter(
        project => project.project_id !== id
      );
    },
    getTagsExceptId: (state, getters) => id => {
      return Object.values(getters.tags).filter(
        tag => tag.record_tag_id !== id
      );
    }
  },
  actions: {
    loadProjects({ commit }) {
      return jugglService.getProjects().then(r => {
        commit("setProjects", r.data.projects);
      });
    },
    loadTags({ commit }) {
      return jugglService.getTags().then(r => {
        commit("setTags", r.data.record_tags);
      });
    },
    loadUser({ commit }) {
      return jugglService
        .getUser()
        .catch(() => {
          return false;
        })
        .then(r => {
          commit("setUser", r.data.users[0]);
          return true;
        });
    },
    loadRecords({ commit, state, getters }, { limit, finished, visible }) {
      if (limit !== undefined) {
        commit("setRecordsLimit", limit);
      }

      var payload = {
        limit: state.recordsLimit,
        finished: finished,
        visible: visible
      };

      return jugglService.getRecords(payload).then(r => {
        var allRecords = Object.values(r.data.records);

        if (finished === true) {
          allRecords = [...allRecords, ...getters.runningRecords];
        } else if (finished === false) {
          allRecords = [...allRecords, ...getters.finishedRecords];
        }

        commit("setRecords", allRecords);
      });
    },
    loadDailyStatistics({ dispatch }, { date }) {
      dispatch("loadStatistics", { from: date, until: date });
    },
    loadMonthlyStatistics(
      { dispatch },
      { startYear, startMonth, endYear, endMonth }
    ) {

      // Month in date object goes from 0 - 11
      var options = {
        from: new Date(startYear, startMonth - 1, 2),
        until: new Date(endYear, endMonth, 0) // 0 leads to the last day of the previous month
      };

      dispatch("loadStatistics", options);
    },
    async loadStatistics({ commit }, options) {
      var results = Object.values(
        (await jugglService.getStatistics(options)).data.statistics
      );

      commit("setStatistics", results);
    },
    loadRunningRecords({ commit, getters }) {
      return jugglService.getRunningRecords().then(r => {
        var allRecords = {
          ...getters.finishedRecords,
          ...r.data.records
        };
        commit("setRecords", allRecords);
      });
    },
    login({ commit, getters }, { userId, apiKey }) {
      // Is already logged in?
      if (getters.isLoggedIn) {
        this.dispatch("logout");
      }

      commit("login", { apiKey: apiKey, userId: userId });

      return this.dispatch("loadUser")
        .catch(() => {
          this.dispatch("logout");
          return false;
        })
        .then(r => {
          if (r === false) {
            this.dispatch("logout");
            return false;
          } else {
            return true;
          }
        });
    },
    logout({ commit }) {
      commit("setUser", undefined);
      commit("setProjects", []);
      commit("setRecords", []);
      commit("logout");
    },
    endRecord({ getters }, recordId) {
      if (recordId === undefined) {
        return false;
      }

      return jugglService
        .endRecord(recordId)
        .catch(() => {
          return false;
        })
        .then(() => {
          // TODO: Return ended record from API
          var record = getters.getRecordById(recordId);
          record.running = false;
          return true;
        });
    },
    addProject(context, { name }) {
      return jugglService
        .addProject(name)
        .catch(() => {
          return false;
        })
        .then(() => {
          this.dispatch("loadProjects");
          return true;
        });
    },
    addTag(context, { name }) {
      return jugglService
        .addTag(name)
        .catch(() => {
          return false;
        })
        .then(() => {
          this.dispatch("loadTags");
          return true;
        });
    },
    addTagToRecord(context, { tagId, recordId }) {
      return jugglService
        .addTagToRecord(tagId, recordId)
        .catch(() => {
          return false;
        })
        .then(() => {
          // TODO: Manualy add tag
          return true;
        });
    },
    removeTagFromRecord(context, { tagId, recordId }) {
      return jugglService
        .removeTagFromRecord(tagId, recordId)
        .catch(() => {
          return false;
        })
        .then(() => {
          // TODO: Manualy remove tag
          return true;
        });
    },
    startRecord(context, projectId) {
      if (projectId === undefined) {
        return false;
      }

      return jugglService
        .startRecord(projectId)
        .catch(() => {
          return false;
        })
        .then(() => {
          this.dispatch("loadRunningRecords");
          return true;
        });
    },
    removeRecord({ commit, getters }, recordId) {
      if (recordId === undefined) {
        return false;
      }

      return jugglService
        .removeRecord(recordId)
        .catch(() => {
          return false;
        })
        .then(() => {
          commit("setRecords", getters.getRecordsExceptId(recordId));
          return true;
        });
    },
    removeProject({ commit, getters }, projectId) {
      if (projectId === undefined) {
        return false;
      }

      return jugglService
        .removeProject(projectId)
        .catch(() => {
          return false;
        })
        .then(() => {
          commit("setProjects", getters.getProjectsExceptId(projectId));
          return true;
        });
    },
    removeTag({ commit, getters }, tagId) {
      if (tagId === undefined) {
        return false;
      }

      return jugglService
        .removeRecordTag(tagId)
        .catch(() => {
          return false;
        })
        .then(() => {
          commit("setTags", getters.getTagsExceptId(tagId));
          return true;
        });
    },
    loadSavedLogin() {
      var userId = localStorage.getItem("userId");
      var apiKey = localStorage.getItem("apiKey");

      if (userId == undefined || apiKey == undefined) {
        return;
      }

      this.dispatch("login", { apiKey: apiKey, userId: userId });
    },
    removeLocalRecords({ commit }) {
      commit("setRecords", []);
    },
    updateRecord({ commit, getters }, record) {
      if (record.record_id === undefined) {
        return;
      }

      return jugglService
        .updateRecord(record)
        .catch(() => {
          return false;
        })
        .then(() => {
          // TODO: Return updated record from API
          var records = getters.getRecordsExceptId(record.record_id);
          records.push(record);
          commit("setRecords", records);
          return true;
        });
    },
    updateTag({ commit, getters }, tag) {
      if (tag.record_tag_id === undefined) {
        return;
      }

      return jugglService
        .updateRecordTag(tag)
        .catch(() => {
          return false;
        })
        .then(() => {
          // TODO: Return updated tag from API
          var tags = getters.getTagsExceptId(tag.record_tag_id);
          tags.push(tag);
          commit("setTags", tags);
          return true;
        });
    },
    updateProject({ commit, getters }, project) {
      if (project.project_id === undefined) {
        return;
      }

      return jugglService
        .updateProject(project)
        .catch(() => {
          return false;
        })
        .then(() => {
          // TODO: Return updated project from API
          var projects = getters.getProjectsExceptId(project.project_id);
          projects.push(project);
          commit("setProjects", projects);
          return true;
        });
    }
  }
};