import Alpine from "alpinejs";

const ArticleReactions = {
  init() {
    document.addEventListener("alpine:init", () => this.startComponent());
  },

  startComponent() {
    Alpine.data(
      "reactions",
      (myReactions = [], articleReactions = [], url = "") => ({
        url,
        myReactions,
        articleReactions,
        allReactions: [],
        isAuthenticated: false,

        init() {
          this.treatArticleReactions();
          this.allReactions = window.App.defaultReactions;
          this.isAuthenticated = window.App.isAuthenticated;

          this.dispatchFlowbiteEvent();
        },

        treatArticleReactions() {
          let articleReactions = this.articleReactions;

          this.articleReactions = [];

          Object.entries(articleReactions).forEach((reactionData) => {
            let reactionName = reactionData[0],
              reactions = Object.values(reactionData[1]);

            this.articleReactions.push({
              id: this.generateVirtualReactionId(reactionName),
              name: reactionName,
              count: reactions.length,
              users: reactions.map((reaction) => reaction.user?.username ?? ""),
            });
          });
        },

        toggleReaction(reaction) {
          if (!this.url.length || !this.isAuthenticated) return;

          axios.post(this.url, { reaction }).then((response) => {
            if (!response.data.success) return;

            if (!response.data.added) {
              this.removeReaction(reaction, response.data.username);
              return;
            }

            this.addReaction(reaction, response.data.username);
          });
        },

        addReaction(name, username) {
          this.myReactions.push(name);

          let existingReaction = this.getReactionDataFromName(name);

          if (existingReaction) {
            existingReaction.count++;
            existingReaction.users.push(username);
            return;
          }

          this.articleReactions.push({
            id: this.generateVirtualReactionId(name),
            name,
            count: 1,
            users: [username],
          });

          this.dispatchFlowbiteEvent();
        },

        removeReaction(name, username) {
          this.myReactions.splice(this.myReactions.indexOf(name), 1);

          let reactionData = this.getReactionDataFromName(name);

          if (reactionData.count > 1) {
            reactionData.count--;
            reactionData.users.splice(reactionData.users.indexOf(username), 1);
            return;
          }

          this.$nextTick(() => {
            this.articleReactions.splice(
              this.articleReactions.indexOf(reactionData),
              1,
            );
          });
        },

        generateVirtualReactionId(name) {
          return name + Math.floor(Math.random() * 1000);
        },

        canAddReactionFromModal(name) {
          return !this.userHasReaction(name) && !this.articleHasReaction(name);
        },

        userHasReaction(reaction) {
          return this.myReactions.includes(reaction.name);
        },

        articleHasReaction(name) {
          return typeof this.getReactionDataFromName(name) !== "undefined";
        },

        getReactionDataFromName(name) {
          return this.articleReactions.find(
            (reaction) => reaction.name === name,
          );
        },

        dispatchFlowbiteEvent() {
          this.$nextTick(() =>
            document.dispatchEvent(new CustomEvent("reactions:loaded")),
          );
        },
      }),
    );
  },
};

export { ArticleReactions as default };