import { alias, equal, match } from "@ember/object/computed";
import { COMPONENTS, THEMES } from "admin/models/theme";
import Controller, { inject as controller } from "@ember/controller";
import discourseComputed from "discourse-common/utils/decorators";
import { observes } from "@ember-decorators/object";
import I18n from "I18n";
import ModalFunctionality from "discourse/mixins/modal-functionality";
import { POPULAR_THEMES } from "discourse-common/lib/popular-themes";
import { ajax } from "discourse/lib/ajax";
import { popupAjaxError } from "discourse/lib/ajax-error";
import { action, set } from "@ember/object";

const MIN_NAME_LENGTH = 4;

export default class AdminInstallThemeController extends Controller.extend(
  ModalFunctionality
) {
  @controller adminCustomizeThemes;
  @controller("adminCustomizeThemes") themesController;

  @equal("selection", "popular") popular;
  @equal("selection", "local") local;
  @equal("selection", "remote") remote;
  @equal("selection", "create") create;
  @equal("selection", "directRepoInstall") directRepoInstall;
  selection = "popular";
  loading = false;
  keyGenUrl = "/admin/themes/generate_key_pair";
  importUrl = "/admin/themes/import";
  recordType = "theme";
  @match("uploadUrl", /^ssh:\/\/.+@.+$|.+@.+:.+$/) checkPrivate;
  localFile = null;
  uploadUrl = null;
  uploadName = null;
  advancedVisible = false;
  @alias("themesController.currentTab") selectedType;
  @equal("selectedType", COMPONENTS) component;
  urlPlaceholder = "https://github.com/discourse/sample_theme";

  createTypes = [
    { name: I18n.t("admin.customize.theme.theme"), value: THEMES },
    { name: I18n.t("admin.customize.theme.component"), value: COMPONENTS },
  ];

  @discourseComputed("themesController.installedThemes")
  themes(installedThemes) {
    return POPULAR_THEMES.map((t) => {
      if (
        installedThemes.some((theme) => this.themeHasSameUrl(theme, t.value))
      ) {
        set(t, "installed", true);
      }
      return t;
    });
  }

  @discourseComputed(
    "loading",
    "remote",
    "uploadUrl",
    "local",
    "localFile",
    "create",
    "nameTooShort"
  )
  installDisabled(
    isLoading,
    isRemote,
    uploadUrl,
    isLocal,
    localFile,
    isCreate,
    nameTooShort
  ) {
    return (
      isLoading ||
      (isRemote && !uploadUrl) ||
      (isLocal && !localFile) ||
      (isCreate && nameTooShort)
    );
  }

  @discourseComputed("name")
  nameTooShort(name) {
    return !name || name.length < MIN_NAME_LENGTH;
  }

  @discourseComputed("component")
  placeholder(component) {
    if (component) {
      return I18n.t("admin.customize.theme.component_name");
    } else {
      return I18n.t("admin.customize.theme.theme_name");
    }
  }

  @observes("checkPrivate")
  privateWasChecked() {
    const checked = this.checkPrivate;
    if (checked && !this._keyLoading && !this.publicKey) {
      this._keyLoading = true;
      ajax(this.keyGenUrl, { type: "POST" })
        .then((pair) => {
          this.set("publicKey", pair.public_key);
        })
        .catch(popupAjaxError)
        .finally(() => {
          this._keyLoading = false;
        });
    }
  }

  @discourseComputed("selection", "themeCannotBeInstalled")
  submitLabel(selection, themeCannotBeInstalled) {
    if (themeCannotBeInstalled) {
      return "admin.customize.theme.create_placeholder";
    }

    return `admin.customize.theme.${
      selection === "create" ? "create" : "install"
    }`;
  }

  @discourseComputed("checkPrivate", "publicKey")
  showPublicKey(checkPrivate, publicKey) {
    return checkPrivate && publicKey;
  }

  onClose() {
    this.setProperties({
      duplicateRemoteThemeWarning: null,
      localFile: null,
      uploadUrl: null,
      publicKey: null,
      branch: null,
      selection: "popular",
    });

    this.themesController.setProperties({
      repoName: null,
      repoUrl: null,
    });
  }

  themeHasSameUrl(theme, url) {
    const themeUrl = theme.remote_theme && theme.remote_theme.remote_url;
    return (
      themeUrl &&
      url &&
      url.replace(/\.git$/, "") === themeUrl.replace(/\.git$/, "")
    );
  }

  @action
  uploadLocaleFile() {
    this.set("localFile", $("#file-input")[0].files[0]);
  }

  @action
  toggleAdvanced() {
    this.toggleProperty("advancedVisible");
  }

  @action
  installThemeFromList(url) {
    this.set("uploadUrl", url);
    this.send("installTheme");
  }

  @action
  installTheme() {
    if (this.create) {
      this.set("loading", true);
      const theme = this.store.createRecord(this.recordType);
      theme
        .save({ name: this.name, component: this.component })
        .then(() => {
          this.themesController.send("addTheme", theme);
          this.send("closeModal");
        })
        .catch(popupAjaxError)
        .finally(() => this.set("loading", false));

      return;
    }

    let options = {
      type: "POST",
    };

    if (this.local) {
      options.processData = false;
      options.contentType = false;
      options.data = new FormData();
      options.data.append("theme", this.localFile);
    }

    if (this.remote || this.popular || this.directRepoInstall) {
      const duplicate = this.themesController.model.content.find((theme) =>
        this.themeHasSameUrl(theme, this.uploadUrl)
      );
      if (duplicate && !this.duplicateRemoteThemeWarning) {
        const warning = I18n.t("admin.customize.theme.duplicate_remote_theme", {
          name: duplicate.name,
        });
        this.set("duplicateRemoteThemeWarning", warning);
        return;
      }
      options.data = {
        remote: this.uploadUrl,
        branch: this.branch,
        public_key: this.publicKey,
      };
    }

    // User knows that theme cannot be installed, but they want to continue
    // to force install it.
    if (this.themeCannotBeInstalled) {
      options.data["force"] = true;
    }

    if (this.get("model.user_id")) {
      // Used by theme-creator
      options.data["user_id"] = this.get("model.user_id");
    }

    this.set("loading", true);
    ajax(this.importUrl, options)
      .then((result) => {
        const theme = this.store.createRecord(this.recordType, result.theme);
        this.adminCustomizeThemes.send("addTheme", theme);
        this.send("closeModal");
      })
      .then(() => {
        this.set("publicKey", null);
      })
      .catch((error) => {
        if (!this.publicKey || this.themeCannotBeInstalled) {
          return popupAjaxError(error);
        }

        this.set(
          "themeCannotBeInstalled",
          I18n.t("admin.customize.theme.force_install")
        );
      })
      .finally(() => this.set("loading", false));
  }
}