import Component from "@ember/component";
import discourseComputed, { observes } from "discourse-common/utils/decorators";
import { alias, equal, or } from "@ember/object/computed";
import I18n from "I18n";

import wizardSchema, {
  requiringAdditionalSubscription,
  subscriptionLevel,
} from "discourse/plugins/discourse-custom-wizard/discourse/lib/wizard-schema";

const generateContent = function (kategory, subscription) {
  let unsubscribedCustomFields = requiringAdditionalSubscription(
    subscription,
    "custom_fields",
    kategory
  );
  return wizardSchema.custom_field[kategory].reduce((result, item) => {
    let disabled = unsubscribedCustomFields.includes(item);
    result.push({
      id: item,
      name: I18n.t(`admin.wizard.custom_field.${kategory}.${item}`),
      subscription: subscriptionLevel(item, "custom_fields", kategory),
      disabled,
    });
    return result;
  }, []);
};

export default Component.extend({
  tagName: "tr",
  topicSerializers: ["topic_view", "topic_list_item"],
  postSerializers: ["post"],
  groupSerializers: ["basic_group"],
  categorySerializers: ["basic_category"],
  showInputs: or("field.new", "field.edit"),
  classNames: ["custom-field-input"],
  loading: or("saving", "destroying"),
  destroyDisabled: alias("loading"),
  closeDisabled: alias("loading"),
  isExternal: equal("field.id", "external"),

  didInsertElement() {
    this.set("originalField", JSON.parse(JSON.stringify(this.field)));
  },

  @discourseComputed("field.klass")
  serializerContent(klass) {
    const serializers = this.get(`${klass}Serializers`);

    if (serializers) {
      return serializers.reduce((result, key) => {
        result.push({
          id: key,
          name: I18n.t(`admin.wizard.custom_field.serializers.${key}`),
        });
        return result;
      }, []);
    }
  },

  @discourseComputed("subscription")
  customFieldTypes(subscription) {
    return generateContent("type", subscription);
  },

  @discourseComputed("subscription")
  customFieldKlasses(subscription) {
    return generateContent("klass", subscription);
  },

  @observes("field.klass")
  clearSerializersWhenClassChanges() {
    this.set("field.serializers", null);
  },

  compareArrays(array1, array2) {
    return (
      array1.length === array2.length &&
      array1.every((value, index) => {
        return value === array2[index];
      })
    );
  },

  @discourseComputed(
    "saving",
    "isExternal",
    "field.name",
    "field.klass",
    "field.type",
    "field.serializers"
  )
  saveDisabled(saving, isExternal) {
    if (saving || isExternal) {
      return true;
    }

    const originalField = this.originalField;
    if (!originalField) {
      return false;
    }

    return ["name", "klass", "type", "serializers"].every((attr) => {
      let current = this.get(attr);
      let original = originalField[attr];

      if (!current) {
        return false;
      }

      if (attr === "serializers") {
        return this.compareArrays(current, original);
      } else {
        return current === original;
      }
    });
  },

  actions: {
    edit() {
      this.set("field.edit", true);
    },

    close() {
      if (this.field.edit) {
        this.set("field.edit", false);
      }
    },

    destroy() {
      this.set("destroying", true);
      this.removeField(this.field);
    },

    save() {
      this.set("saving", true);

      const field = this.field;

      let data = {
        id: field.id,
        klass: field.klass,
        type: field.type,
        serializers: field.serializers,
        name: field.name,
      };

      this.saveField(data).then((result) => {
        this.set("saving", false);
        if (result.success) {
          this.set("field.edit", false);
        } else {
          this.set("saveIcon", "times");
        }
        setTimeout(() => this.set("saveIcon", null), 10000);
      });
    },
  },
});