import Controller from "@ember/controller";
import { observes } from "discourse-common/utils/decorators";
import { empty } from "@ember/object/computed";
import CustomWizardManager from "../models/custom-wizard-manager";
import { A } from "@ember/array";
import I18n from "I18n";
import { underscore } from "@ember/string";

export default Controller.extend({
  messageUrl: "https://thepavilion.io/t/3652",
  messageKey: "info",
  messageIcon: "info-circle",
  messageClass: "info",
  importDisabled: empty("file"),
  exportWizards: A(),
  destroyWizards: A(),
  exportDisabled: empty("exportWizards"),
  destoryDisabled: empty("destroyWizards"),

  setMessage(type, key, opts = {}, items = []) {
    this.setProperties({
      messageKey: key,
      messageOpts: opts,
      messageType: type,
      messageItems: items,
    });
    setTimeout(() => {
      this.setProperties({
        messageKey: "info",
        messageOpts: null,
        messageType: null,
        messageItems: null,
      });
    }, 10000);
  },

  buildWizardLink(wizard) {
    let html = `<a href='/admin/wizards/wizard/${wizard.id}'>${wizard.name}</a>`;
    html += `<span class='action'>${I18n.t(
      "admin.wizard.manager.imported"
    )}</span>`;
    return {
      icon: "check-circle",
      html,
    };
  },

  buildDestroyedItem(destroyed) {
    let html = `<span data-wizard-id="${destroyed.id}">${destroyed.name}</span>`;
    html += `<span class='action'>${I18n.t(
      "admin.wizard.manager.destroyed"
    )}</span>`;
    return {
      icon: "check-circle",
      html,
    };
  },

  buildFailureItem(failure) {
    return {
      icon: "times-circle",
      html: `${failure.id}: ${failure.messages}`,
    };
  },

  clearFile() {
    this.setProperties({
      file: null,
      filename: null,
    });
    document.getElementById('custom-wizard-file-upload').value = '';
  },

  @observes("importing", "destroying")
  setLoadingMessages() {
    if (this.importing) {
      this.setMessage("loading", "importing");
    }
    if (this.destroying) {
      this.setMessage("loading", "destroying");
    }
  },

  actions: {
    upload() {
      document.getElementById('custom-wizard-file-upload').click();
    },

    clearFile() {
      this.clearFile();
    },

    setFile(event) {
      let maxFileSize = 512 * 1024;
      const file = event.target.files[0];

      if (file === undefined) {
        this.set("file", null);
        return;
      }

      if (maxFileSize < file.size) {
        this.setMessage("error", "file_size_error");
        this.set("file", null);
        document.getElementById('custom-wizard-file-upload').value = '';
      } else {
        this.setProperties({
          file,
          filename: file.name,
        });
      }
    },

    selectWizard(event) {
      const type = event.target.classList.contains("export")
        ? "export"
        : "destroy";
      const wizards = this.get(`${type}Wizards`);
      const checked = event.target.checked;

      let wizardId = event.target.closest("tr").getAttribute("data-wizard-id");

      if (wizardId) {
        wizardId = underscore(wizardId);
      } else {
        return false;
      }

      if (checked) {
        wizards.addObject(wizardId);
      } else {
        wizards.removeObject(wizardId);
      }
    },

    import() {
      const file = this.get("file");

      if (!file) {
        this.setMessage("error", "no_file");
        return;
      }

      let $formData = new FormData();
      $formData.append("file", file);

      this.set("importing", true);
      this.setMessage("loading", "importing");

      CustomWizardManager.import($formData)
        .then((result) => {
          if (result.error) {
            this.setMessage("error", "server_error", {
              message: result.error,
            });
          } else {
            this.setMessage(
              "success",
              "import_complete",
              {},
              result.imported
                .map((imported) => {
                  return this.buildWizardLink(imported);
                })
                .concat(
                  result.failures.map((failure) => {
                    return this.buildFailureItem(failure);
                  })
                )
            );

            if (result.imported.length) {
              this.get("wizards").addObjects(result.imported);
            }
          }
          this.clearFile();
        })
        .finally(() => {
          this.set("importing", false);
        });
    },

    export() {
      const exportWizards = this.get("exportWizards");

      if (!exportWizards.length) {
        this.setMessage("error", "none_selected");
      } else {
        CustomWizardManager.export(exportWizards);
        exportWizards.clear();
        $("input.export").prop("checked", false);
      }
    },

    destroy() {
      let destroyWizards = this.get("destroyWizards");

      if (!destroyWizards.length) {
        this.setMessage("error", "none_selected");
      } else {
        this.set("destroying", true);

        CustomWizardManager.destroy(destroyWizards)
          .then((result) => {
            if (result.error) {
              this.setMessage("error", "server_error", {
                message: result.error,
              });
            } else {
              this.setMessage(
                "success",
                "destroy_complete",
                {},
                result.destroyed
                  .map((destroyed) => {
                    return this.buildDestroyedItem(destroyed);
                  })
                  .concat(
                    result.failures.map((failure) => {
                      return this.buildFailureItem(failure);
                    })
                  )
              );

              if (result.destroyed.length) {
                const destroyedIds = result.destroyed.map((d) => d.id);
                destroyWizards = this.get("destroyWizards");
                const wizards = this.get("wizards");

                wizards.removeObjects(
                  wizards.filter((w) => {
                    return destroyedIds.includes(w.id);
                  })
                );

                destroyWizards.removeObjects(destroyedIds);
              }
            }
          })
          .finally(() => {
            this.set("destroying", false);
          });
      }
    },
  },
});