import { ajax } from "discourse/lib/ajax";
import Badge from "discourse/models/badge";
import { getOwner } from "discourse-common/lib/get-owner";
import { default as computed } from "ember-addons/ember-computed-decorators";

function randomIdShort() {
  return "xxxxxxxx".replace(/[xy]/g, function() {
    /*eslint-disable*/
    return ((Math.random() * 16) | 0).toString(16);
    /*eslint-enable*/
  });
}

function transformedRelTable(table, modelClass) {
  const result = {};
  table.forEach(function(item) {
    if (modelClass) {
      result[item.id] = modelClass.create(item);
    } else {
      result[item.id] = item;
    }
  });
  return result;
}

const QueryResultComponent = Ember.Component.extend({
  layoutName: "explorer-query-result",

  rows: Ember.computed.alias("content.rows"),
  columns: Ember.computed.alias("content.columns"),
  params: Ember.computed.alias("content.params"),
  explainText: Ember.computed.alias("content.explain"),
  hasExplain: Ember.computed.notEmpty("content.explain"),

  @computed("content.result_count")
  resultCount: function(count) {
    if (count === this.get("content.default_limit")) {
      return I18n.t("explorer.max_result_count", { count });
    } else {
      return I18n.t("explorer.result_count", { count });
    }
  },

  colCount: function() {
    return this.get("content.columns").length;
  }.property("content.columns.length"),

  duration: function() {
    return I18n.t("explorer.run_time", {
      value: I18n.toNumber(this.get("content.duration"), { precision: 1 })
    });
  }.property("content.duration"),

  parameterAry: function() {
    let arr = [];
    const params = this.get("params");
    for (var key in params) {
      if (params.hasOwnProperty(key)) {
        arr.push({ key: key, value: params[key] });
      }
    }
    return arr;
  }.property("params.[]"),

  columnDispNames: function() {
    if (!this.get("columns")) {
      return [];
    }
    return this.get("columns").map(function(colName) {
      if (colName.endsWith("_id")) {
        return colName.slice(0, -3);
      }
      const dIdx = colName.indexOf("$");
      if (dIdx >= 0) {
        return colName.substring(dIdx + 1);
      }
      return colName;
    });
  }.property("content", "columns.[]"),

  fallbackTemplate: function() {
    return getOwner(this).lookup("template:explorer/text.raw");
  }.property(),

  columnTemplates: function() {
    const self = this;
    if (!this.get("columns")) {
      return [];
    }
    return this.get("columns").map(function(colName, idx) {
      let viewName = "text";
      if (self.get("content.colrender")[idx]) {
        viewName = self.get("content.colrender")[idx];
      }

      // After `findRawTemplates` is in stable this should be updated to use that
      let template = getOwner(self).lookup(
        "template:explorer/" + viewName + ".raw"
      );
      if (!template) {
        template = Discourse.RAW_TEMPLATES[`javascripts/explorer/${viewName}`];
      }

      return { name: viewName, template };
    });
  }.property("content", "columns.[]"),

  transformedUserTable: function() {
    return transformedRelTable(this.get("content.relations.user"));
  }.property("content.relations.user"),
  transformedBadgeTable: function() {
    return transformedRelTable(this.get("content.relations.badge"), Badge);
  }.property("content.relations.badge"),
  transformedPostTable: function() {
    return transformedRelTable(this.get("content.relations.post"));
  }.property("content.relations.post"),
  transformedTopicTable: function() {
    return transformedRelTable(this.get("content.relations.topic"));
  }.property("content.relations.topic"),

  transformedGroupTable: function() {
    return transformedRelTable(this.get("site.groups"));
  }.property("site.groups"),

  lookupUser(id) {
    return this.get("transformedUserTable")[id];
  },
  lookupBadge(id) {
    return this.get("transformedBadgeTable")[id];
  },
  lookupPost(id) {
    return this.get("transformedPostTable")[id];
  },
  lookupTopic(id) {
    return this.get("transformedTopicTable")[id];
  },
  lookupGroup(id) {
    return this.get("transformedGroupTable")[id];
  },

  lookupCategory(id) {
    return this.site.get("categoriesById")[id];
  },

  downloadResult(format) {
    // Create a frame to submit the form in (?)
    // to avoid leaving an about:blank behind
    let windowName = randomIdShort();
    const newWindowContents =
      "<style>body{font-size:36px;display:flex;justify-content:center;align-items:center;}</style><body>Click anywhere to close this window once the download finishes.<script>window.onclick=function(){window.close()};</script>";

    window.open("data:text/html;base64," + btoa(newWindowContents), windowName);

    let form = document.createElement("form");
    form.setAttribute("id", "query-download-result");
    form.setAttribute("method", "post");
    form.setAttribute(
      "action",
      Discourse.getURL(
        "/admin/plugins/explorer/queries/" +
          this.get("query.id") +
          "/run." +
          format +
          "?download=1"
      )
    );
    form.setAttribute("target", windowName);
    form.setAttribute("style", "display:none;");

    function addInput(name, value) {
      let field;
      field = document.createElement("input");
      field.setAttribute("name", name);
      field.setAttribute("value", value);
      form.appendChild(field);
    }

    addInput("params", JSON.stringify(this.get("params")));
    addInput("explain", this.get("hasExplain"));
    addInput("limit", "1000000");

    ajax("/session/csrf.json").then(function(csrf) {
      addInput("authenticity_token", csrf.csrf);

      document.body.appendChild(form);
      form.submit();
      Ember.run.next("afterRender", function() {
        document.body.removeChild(form);
      });
    });
  },

  actions: {
    downloadResultJson() {
      this.downloadResult("json");
    },
    downloadResultCsv() {
      this.downloadResult("csv");
    }
  }
});

export default QueryResultComponent;