import { Component, linkEvent } from "inferno";
import {
  CreateCustomEmoji,
  CustomEmojiResponse,
  DeleteCustomEmoji,
  DeleteCustomEmojiResponse,
  EditCustomEmoji,
  GetSiteResponse,
  UserOperation,
  wsJsonToRes,
  wsUserOp,
} from "lemmy-js-client";
import { Subscription } from "rxjs";
import { i18n } from "../../i18next";
import { WebSocketService } from "../../services";
import {
  customEmojisLookup,
  isBrowser,
  myAuth,
  pictrsDeleteToast,
  removeFromEmojiDataModel,
  setIsoData,
  toast,
  updateEmojiDataModel,
  uploadImage,
  wsClient,
  wsSubscribe,
} from "../../utils";
import { EmojiMart } from "../common/emoji-mart";
import { HtmlTags } from "../common/html-tags";
import { Icon } from "../common/icon";
import { Paginator } from "../common/paginator";

interface EmojiFormState {
  siteRes: GetSiteResponse;
  customEmojis: CustomEmojiViewForm[];
  loading: boolean;
  page: number;
}

interface CustomEmojiViewForm {
  id: number;
  category: string;
  shortcode: string;
  image_url: string;
  alt_text: string;
  keywords: string;
  changed: boolean;
  page: number;
}

export class EmojiForm extends Component<any, EmojiFormState> {
  private isoData = setIsoData(this.context);
  private subscription: Subscription | undefined;
  private itemsPerPage = 15;
  private emptyState: EmojiFormState = {
    loading: false,
    siteRes: this.isoData.site_res,
    customEmojis: this.isoData.site_res.custom_emojis.map((x, index) => ({
      id: x.custom_emoji.id,
      category: x.custom_emoji.category,
      shortcode: x.custom_emoji.shortcode,
      image_url: x.custom_emoji.image_url,
      alt_text: x.custom_emoji.alt_text,
      keywords: x.keywords.map(x => x.keyword).join(" "),
      changed: false,
      page: 1 + Math.floor(index / this.itemsPerPage),
    })),
    page: 1,
  };
  state: EmojiFormState;
  private scrollRef: any = {};
  constructor(props: any, context: any) {
    super(props, context);
    this.state = this.emptyState;

    this.handlePageChange = this.handlePageChange.bind(this);
    this.parseMessage = this.parseMessage.bind(this);
    this.handleEmojiClick = this.handleEmojiClick.bind(this);
    this.subscription = wsSubscribe(this.parseMessage);
  }
  get documentTitle(): string {
    return i18n.t("custom_emojis");
  }

  componentWillUnmount() {
    if (isBrowser()) {
      this.subscription?.unsubscribe();
    }
  }

  render() {
    return (
      <div className="col-12">
        <HtmlTags
          title={this.documentTitle}
          path={this.context.router.route.match.url}
        />
        <h5 className="col-12">{i18n.t("custom_emojis")}</h5>
        {customEmojisLookup.size > 0 && (
          <div>
            <EmojiMart
              onEmojiClick={this.handleEmojiClick}
              pickerOptions={this.configurePicker()}
            ></EmojiMart>
          </div>
        )}
        <div className="table-responsive">
          <table id="emojis_table" className="table table-sm table-hover">
            <thead className="pointer">
              <tr>
                <th>{i18n.t("column_emoji")}</th>
                <th className="text-right">{i18n.t("column_shortcode")}</th>
                <th className="text-right">{i18n.t("column_category")}</th>
                <th className="text-right d-lg-table-cell d-none">
                  {i18n.t("column_imageurl")}
                </th>
                <th className="text-right">{i18n.t("column_alttext")}</th>
                <th className="text-right d-lg-table-cell">
                  {i18n.t("column_keywords")}
                </th>
                <th style="width:121px"></th>
              </tr>
            </thead>
            <tbody>
              {this.state.customEmojis
                .slice(
                  Number((this.state.page - 1) * this.itemsPerPage),
                  Number(
                    (this.state.page - 1) * this.itemsPerPage +
                      this.itemsPerPage
                  )
                )
                .map((cv, index) => (
                  <tr key={index} ref={e => (this.scrollRef[cv.shortcode] = e)}>
                    <td style="text-align:center;">
                      <label
                        htmlFor={index.toString()}
                        className="pointer text-muted small font-weight-bold"
                      >
                        {cv.image_url.length > 0 && (
                          <img
                            className="icon-emoji-admin"
                            src={cv.image_url}
                          />
                        )}
                        {cv.image_url.length == 0 && (
                          <span className="btn btn-sm btn-secondary">
                            Upload
                          </span>
                        )}
                      </label>
                      <input
                        name={index.toString()}
                        id={index.toString()}
                        type="file"
                        accept="image/*"
                        className="d-none"
                        onChange={linkEvent(
                          { form: this, index: index },
                          this.handleImageUpload
                        )}
                      />
                    </td>
                    <td className="text-right">
                      <input
                        type="text"
                        placeholder="ShortCode"
                        className="form-control"
                        disabled={cv.id > 0}
                        value={cv.shortcode}
                        onInput={linkEvent(
                          { form: this, index: index },
                          this.handleEmojiShortCodeChange
                        )}
                      />
                    </td>
                    <td className="text-right">
                      <input
                        type="text"
                        placeholder="Category"
                        className="form-control"
                        value={cv.category}
                        onInput={linkEvent(
                          { form: this, index: index },
                          this.handleEmojiCategoryChange
                        )}
                      />
                    </td>
                    <td className="text-right d-lg-table-cell d-none">
                      <input
                        type="text"
                        placeholder="Url"
                        className="form-control"
                        value={cv.image_url}
                        onInput={linkEvent(
                          { form: this, index: index, overrideValue: null },
                          this.handleEmojiImageUrlChange
                        )}
                      />
                    </td>
                    <td className="text-right">
                      <input
                        type="text"
                        placeholder="Alt Text"
                        className="form-control"
                        value={cv.alt_text}
                        onInput={linkEvent(
                          { form: this, index: index },
                          this.handleEmojiAltTextChange
                        )}
                      />
                    </td>
                    <td className="text-right d-lg-table-cell">
                      <input
                        type="text"
                        placeholder="Keywords"
                        className="form-control"
                        value={cv.keywords}
                        onInput={linkEvent(
                          { form: this, index: index },
                          this.handleEmojiKeywordChange
                        )}
                      />
                    </td>
                    <td>
                      <div>
                        <span title={this.getEditTooltip(cv)}>
                          <button
                            className={
                              (cv.changed ? "text-success " : "text-muted ") +
                              "btn btn-link btn-animate"
                            }
                            onClick={linkEvent(
                              { form: this, cv: cv },
                              this.handleEditEmojiClick
                            )}
                            data-tippy-content={i18n.t("save")}
                            aria-label={i18n.t("save")}
                            disabled={
                              this.state.loading ||
                              !this.canEdit(cv) ||
                              !cv.changed
                            }
                          >
                            {/* <Icon
                                                            icon="edit"
                                                            classes={`icon-inline`}
                                                        /> */}
                            Save
                          </button>
                        </span>
                        <button
                          className="btn btn-link btn-animate text-muted"
                          onClick={linkEvent(
                            { form: this, index: index, cv: cv },
                            this.handleDeleteEmojiClick
                          )}
                          data-tippy-content={i18n.t("delete")}
                          aria-label={i18n.t("delete")}
                          disabled={this.state.loading}
                          title={i18n.t("delete")}
                        >
                          <Icon
                            icon="trash"
                            classes={`icon-inline text-danger`}
                          />
                        </button>
                      </div>
                    </td>
                  </tr>
                ))}
            </tbody>
          </table>
          <br />
          <button
            className="btn btn-sm btn-secondary mr-2"
            onClick={linkEvent(this, this.handleAddEmojiClick)}
          >
            {i18n.t("add_custom_emoji")}
          </button>

          <Paginator page={this.state.page} onChange={this.handlePageChange} />
        </div>
      </div>
    );
  }

  canEdit(cv: CustomEmojiViewForm) {
    const noEmptyFields =
      cv.alt_text.length > 0 &&
      cv.category.length > 0 &&
      cv.image_url.length > 0 &&
      cv.shortcode.length > 0;
    const noDuplicateShortCodes =
      this.state.customEmojis.filter(
        x => x.shortcode == cv.shortcode && x.id != cv.id
      ).length == 0;
    return noEmptyFields && noDuplicateShortCodes;
  }

  getEditTooltip(cv: CustomEmojiViewForm) {
    if (this.canEdit(cv)) return i18n.t("save");
    else return i18n.t("custom_emoji_save_validation");
  }

  handlePageChange(page: number) {
    this.setState({ page: page });
  }

  handleEmojiClick(e: any) {
    const view = customEmojisLookup.get(e.id);
    if (view) {
      const page = this.state.customEmojis.find(
        x => x.id == view.custom_emoji.id
      )?.page;
      if (page) {
        this.setState({ page: page });
        this.scrollRef[view.custom_emoji.shortcode].scrollIntoView();
      }
    }
  }

  handleEmojiCategoryChange(
    props: { form: EmojiForm; index: number },
    event: any
  ) {
    let custom_emojis = [...props.form.state.customEmojis];
    let pagedIndex =
      (props.form.state.page - 1) * props.form.itemsPerPage + props.index;
    let item = {
      ...props.form.state.customEmojis[pagedIndex],
      category: event.target.value,
      changed: true,
    };
    custom_emojis[Number(pagedIndex)] = item;
    props.form.setState({ customEmojis: custom_emojis });
  }

  handleEmojiShortCodeChange(
    props: { form: EmojiForm; index: number },
    event: any
  ) {
    let custom_emojis = [...props.form.state.customEmojis];
    let pagedIndex =
      (props.form.state.page - 1) * props.form.itemsPerPage + props.index;
    let item = {
      ...props.form.state.customEmojis[pagedIndex],
      shortcode: event.target.value,
      changed: true,
    };
    custom_emojis[Number(pagedIndex)] = item;
    props.form.setState({ customEmojis: custom_emojis });
  }

  handleEmojiImageUrlChange(
    props: { form: EmojiForm; index: number; overrideValue: string | null },
    event: any
  ) {
    let custom_emojis = [...props.form.state.customEmojis];
    let pagedIndex =
      (props.form.state.page - 1) * props.form.itemsPerPage + props.index;
    let item = {
      ...props.form.state.customEmojis[pagedIndex],
      image_url: props.overrideValue ?? event.target.value,
      changed: true,
    };
    custom_emojis[Number(pagedIndex)] = item;
    props.form.setState({ customEmojis: custom_emojis });
  }

  handleEmojiAltTextChange(
    props: { form: EmojiForm; index: number },
    event: any
  ) {
    let custom_emojis = [...props.form.state.customEmojis];
    let pagedIndex =
      (props.form.state.page - 1) * props.form.itemsPerPage + props.index;
    let item = {
      ...props.form.state.customEmojis[pagedIndex],
      alt_text: event.target.value,
      changed: true,
    };
    custom_emojis[Number(pagedIndex)] = item;
    props.form.setState({ customEmojis: custom_emojis });
  }

  handleEmojiKeywordChange(
    props: { form: EmojiForm; index: number },
    event: any
  ) {
    let custom_emojis = [...props.form.state.customEmojis];
    let pagedIndex =
      (props.form.state.page - 1) * props.form.itemsPerPage + props.index;
    let item = {
      ...props.form.state.customEmojis[pagedIndex],
      keywords: event.target.value,
      changed: true,
    };
    custom_emojis[Number(pagedIndex)] = item;
    props.form.setState({ customEmojis: custom_emojis });
  }

  handleDeleteEmojiClick(props: {
    form: EmojiForm;
    index: number;
    cv: CustomEmojiViewForm;
  }) {
    let pagedIndex =
      (props.form.state.page - 1) * props.form.itemsPerPage + props.index;
    if (props.cv.id != 0) {
      const deleteForm: DeleteCustomEmoji = {
        id: props.cv.id,
        auth: myAuth() ?? "",
      };
      WebSocketService.Instance.send(wsClient.deleteCustomEmoji(deleteForm));
    } else {
      let custom_emojis = [...props.form.state.customEmojis];
      custom_emojis.splice(Number(pagedIndex), 1);
      props.form.setState({ customEmojis: custom_emojis });
    }
  }

  handleEditEmojiClick(props: { form: EmojiForm; cv: CustomEmojiViewForm }) {
    const keywords = props.cv.keywords
      .split(" ")
      .filter(x => x.length > 0) as string[];
    const uniqueKeywords = Array.from(new Set(keywords));
    if (props.cv.id != 0) {
      const editForm: EditCustomEmoji = {
        id: props.cv.id,
        category: props.cv.category,
        image_url: props.cv.image_url,
        alt_text: props.cv.alt_text,
        keywords: uniqueKeywords,
        auth: myAuth() ?? "",
      };
      WebSocketService.Instance.send(wsClient.editCustomEmoji(editForm));
    } else {
      const createForm: CreateCustomEmoji = {
        category: props.cv.category,
        shortcode: props.cv.shortcode,
        image_url: props.cv.image_url,
        alt_text: props.cv.alt_text,
        keywords: uniqueKeywords,
        auth: myAuth() ?? "",
      };
      WebSocketService.Instance.send(wsClient.createCustomEmoji(createForm));
    }
  }

  handleAddEmojiClick(form: EmojiForm, event: any) {
    event.preventDefault();
    let custom_emojis = [...form.state.customEmojis];
    const page =
      1 + Math.floor(form.state.customEmojis.length / form.itemsPerPage);
    let item: CustomEmojiViewForm = {
      id: 0,
      shortcode: "",
      alt_text: "",
      category: "",
      image_url: "",
      keywords: "",
      changed: true,
      page: page,
    };
    custom_emojis.push(item);
    form.setState({ customEmojis: custom_emojis, page: page });
  }

  handleImageUpload(props: { form: EmojiForm; index: number }, event: any) {
    let file: any;
    if (event.target) {
      event.preventDefault();
      file = event.target.files[0];
    } else {
      file = event;
    }

    uploadImage(file)
      .then(res => {
        console.log("pictrs upload:");
        console.log(res);
        if (res.msg === "ok") {
          pictrsDeleteToast(file.name, res.delete_url as string);
        } else {
          toast(JSON.stringify(res), "danger");
          let hash = res.files?.at(0)?.file;
          let url = `${res.url}/${hash}`;
          props.form.handleEmojiImageUrlChange(
            { form: props.form, index: props.index, overrideValue: url },
            event
          );
        }
      })
      .catch(error => {
        console.error(error);
        toast(error, "danger");
      });
  }

  configurePicker(): any {
    return {
      data: { categories: [], emojis: [], aliases: [] },
      maxFrequentRows: 0,
      dynamicWidth: true,
    };
  }

  parseMessage(msg: any) {
    let op = wsUserOp(msg);
    console.log(msg);
    if (msg.error) {
      toast(i18n.t(msg.error), "danger");
      this.context.router.history.push("/");
      this.setState({ loading: false });
      return;
    } else if (op == UserOperation.CreateCustomEmoji) {
      let data = wsJsonToRes<CustomEmojiResponse>(msg);
      const custom_emoji_view = data.custom_emoji;
      updateEmojiDataModel(custom_emoji_view);
      let currentEmojis = this.state.customEmojis;
      let newEmojiIndex = currentEmojis.findIndex(
        x => x.shortcode == custom_emoji_view.custom_emoji.shortcode
      );
      currentEmojis[newEmojiIndex].id = custom_emoji_view.custom_emoji.id;
      currentEmojis[newEmojiIndex].changed = false;
      this.setState({ customEmojis: currentEmojis });
      toast(i18n.t("saved_emoji"));
      this.setState({ loading: false });
    } else if (op == UserOperation.EditCustomEmoji) {
      let data = wsJsonToRes<CustomEmojiResponse>(msg);
      const custom_emoji_view = data.custom_emoji;
      updateEmojiDataModel(data.custom_emoji);
      let currentEmojis = this.state.customEmojis;
      let newEmojiIndex = currentEmojis.findIndex(
        x => x.shortcode == custom_emoji_view.custom_emoji.shortcode
      );
      currentEmojis[newEmojiIndex].changed = false;
      this.setState({ customEmojis: currentEmojis });
      toast(i18n.t("saved_emoji"));
      this.setState({ loading: false });
    } else if (op == UserOperation.DeleteCustomEmoji) {
      let data = wsJsonToRes<DeleteCustomEmojiResponse>(msg);
      if (data.success) {
        removeFromEmojiDataModel(data.id);
        let custom_emojis = [
          ...this.state.customEmojis.filter(x => x.id != data.id),
        ];
        this.setState({ customEmojis: custom_emojis });
        toast(i18n.t("deleted_emoji"));
      }
      this.setState({ loading: false });
    }
  }
}