///<reference path="../../../headers/common.d.ts" />

import _ from "lodash";
import kbn from "app/core/utils/kbn";
import { QueryCtrl } from "app/plugins/sdk";

export class OpenTsQueryCtrl extends QueryCtrl {
  static templateUrl = "partials/query.editor.html";
  aggregators: any;
  fillPolicies: any;
  filterTypes: any;
  tsdbVersion: any;
  aggregator: any;
  downsampleInterval: any;
  downsampleAggregator: any;
  downsampleFillPolicy: any;
  errors: any;
  suggestMetrics: any;
  suggestTagKeys: any;
  suggestTagValues: any;
  addTagMode: boolean;
  addFilterMode: boolean;

  /** @ngInject **/
  constructor($scope, $injector) {
    super($scope, $injector);

    this.errors = this.validateTarget();
    this.aggregators = [
      "avg",
      "sum",
      "min",
      "max",
      "dev",
      "zimsum",
      "mimmin",
      "mimmax"
    ];
    this.fillPolicies = ["none", "nan", "null", "zero"];
    this.filterTypes = [
      "wildcard",
      "iliteral_or",
      "not_iliteral_or",
      "not_literal_or",
      "iwildcard",
      "literal_or",
      "regexp"
    ];

    this.tsdbVersion = this.datasource.tsdbVersion;

    if (!this.target.aggregator) {
      this.target.aggregator = "sum";
    }

    if (!this.target.downsampleAggregator) {
      this.target.downsampleAggregator = "avg";
    }

    if (!this.target.downsampleFillPolicy) {
      this.target.downsampleFillPolicy = "none";
    }

    this.datasource.getAggregators().then(aggs => {
      if (aggs.length !== 0) {
        this.aggregators = aggs;
      }
    });

    this.datasource.getFilterTypes().then(filterTypes => {
      if (filterTypes.length !== 0) {
        this.filterTypes = filterTypes;
      }
    });

    // needs to be defined here as it is called from typeahead
    this.suggestMetrics = (query, callback) => {
      this.datasource
        .metricFindQuery("metrics(" + query + ")")
        .then(this.getTextValues)
        .then(callback);
    };

    this.suggestTagKeys = (query, callback) => {
      this.datasource.suggestTagKeys(this.target.metric).then(callback);
    };

    this.suggestTagValues = (query, callback) => {
      this.datasource
        .metricFindQuery("suggest_tagv(" + query + ")")
        .then(this.getTextValues)
        .then(callback);
    };
  }

  targetBlur() {
    this.errors = this.validateTarget();
    this.refresh();
  }

  getTextValues(metricFindResult) {
    return _.map(metricFindResult, function(value) {
      return value.text;
    });
  }

  addTag() {
    if (this.target.filters && this.target.filters.length > 0) {
      this.errors.tags =
        "Please remove filters to use tags, tags and filters are mutually exclusive.";
    }

    if (!this.addTagMode) {
      this.addTagMode = true;
      return;
    }

    if (!this.target.tags) {
      this.target.tags = {};
    }

    this.errors = this.validateTarget();

    if (!this.errors.tags) {
      this.target.tags[this.target.currentTagKey] = this.target.currentTagValue;
      this.target.currentTagKey = "";
      this.target.currentTagValue = "";
      this.targetBlur();
    }

    this.addTagMode = false;
  }

  removeTag(key) {
    delete this.target.tags[key];
    this.targetBlur();
  }

  editTag(key, value) {
    this.removeTag(key);
    this.target.currentTagKey = key;
    this.target.currentTagValue = value;
    this.addTag();
  }

  closeAddTagMode() {
    this.addTagMode = false;
    return;
  }

  addFilter() {
    if (this.target.tags && _.size(this.target.tags) > 0) {
      this.errors.filters =
        "Please remove tags to use filters, tags and filters are mutually exclusive.";
    }

    if (!this.addFilterMode) {
      this.addFilterMode = true;
      return;
    }

    if (!this.target.filters) {
      this.target.filters = [];
    }

    if (!this.target.currentFilterType) {
      this.target.currentFilterType = "iliteral_or";
    }

    if (!this.target.currentFilterGroupBy) {
      this.target.currentFilterGroupBy = false;
    }

    this.errors = this.validateTarget();

    if (!this.errors.filters) {
      var currentFilter = {
        type: this.target.currentFilterType,
        tagk: this.target.currentFilterKey,
        filter: this.target.currentFilterValue,
        groupBy: this.target.currentFilterGroupBy
      };
      this.target.filters.push(currentFilter);
      this.target.currentFilterType = "literal_or";
      this.target.currentFilterKey = "";
      this.target.currentFilterValue = "";
      this.target.currentFilterGroupBy = false;
      this.targetBlur();
    }

    this.addFilterMode = false;
  }

  removeFilter(index) {
    this.target.filters.splice(index, 1);
    this.targetBlur();
  }

  editFilter(fil, index) {
    this.removeFilter(index);
    this.target.currentFilterKey = fil.tagk;
    this.target.currentFilterValue = fil.filter;
    this.target.currentFilterType = fil.type;
    this.target.currentFilterGroupBy = fil.groupBy;
    this.addFilter();
  }

  closeAddFilterMode() {
    this.addFilterMode = false;
    return;
  }

  validateTarget() {
    var errs: any = {};

    if (this.target.shouldDownsample) {
      try {
        if (this.target.downsampleInterval) {
          kbn.describe_interval(this.target.downsampleInterval);
        } else {
          errs.downsampleInterval =
            "You must supply a downsample interval (e.g. '1m' or '1h').";
        }
      } catch (err) {
        errs.downsampleInterval = err.message;
      }
    }

    if (
      this.target.tags &&
      _.has(this.target.tags, this.target.currentTagKey)
    ) {
      errs.tags = "Duplicate tag key '" + this.target.currentTagKey + "'.";
    }

    return errs;
  }
}