const prisma = require("../utils/prisma");
const slugify = require("slugify");
const { Document } = require("./documents");
const { WorkspaceUser } = require("./workspaceUsers");
const { ROLES } = require("../utils/middleware/multiUserProtected");
const { v4: uuidv4 } = require("uuid");

const Workspace = {
  writable: [
    // Used for generic updates so we can validate keys in request body
    "name",
    "slug",
    "vectorTag",
    "openAiTemp",
    "openAiHistory",
    "lastUpdatedAt",
    "openAiPrompt",
    "similarityThreshold",
    "chatModel",
    "topN",
    "chatMode",
    "pfpFilename",
  ],

  new: async function (name = null, creatorId = null) {
    if (!name) return { result: null, message: "name cannot be null" };
    var slug = slugify(name, { lower: true });
    slug = slug || uuidv4();

    const existingBySlug = await this.get({ slug });
    if (existingBySlug !== null) {
      const slugSeed = Math.floor(10000000 + Math.random() * 90000000);
      slug = slugify(`${name}-${slugSeed}`, { lower: true });
    }

    try {
      const workspace = await prisma.workspaces.create({
        data: { name, slug },
      });

      // If created with a user then we need to create the relationship as well.
      // If creating with an admin User it wont change anything because admins can
      // view all workspaces anyway.
      if (!!creatorId) await WorkspaceUser.create(creatorId, workspace.id);
      return { workspace, message: null };
    } catch (error) {
      console.error(error.message);
      return { workspace: null, message: error.message };
    }
  },

  update: async function (id = null, data = {}) {
    if (!id) throw new Error("No workspace id provided for update");

    const validKeys = Object.keys(data).filter((key) =>
      this.writable.includes(key)
    );
    if (validKeys.length === 0)
      return { workspace: { id }, message: "No valid fields to update!" };

    try {
      const workspace = await prisma.workspaces.update({
        where: { id },
        data, // TODO: strict validation on writables here.
      });
      return { workspace, message: null };
    } catch (error) {
      console.error(error.message);
      return { workspace: null, message: error.message };
    }
  },

  getWithUser: async function (user = null, clause = {}) {
    if ([ROLES.admin, ROLES.manager].includes(user.role))
      return this.get(clause);

    try {
      const workspace = await prisma.workspaces.findFirst({
        where: {
          ...clause,
          workspace_users: {
            some: {
              user_id: user?.id,
            },
          },
        },
        include: {
          workspace_users: true,
          documents: true,
        },
      });

      if (!workspace) return null;

      return {
        ...workspace,
        documents: await Document.forWorkspace(workspace.id),
      };
    } catch (error) {
      console.error(error.message);
      return null;
    }
  },

  get: async function (clause = {}) {
    try {
      const workspace = await prisma.workspaces.findFirst({
        where: clause,
        include: {
          documents: true,
        },
      });

      return workspace || null;
    } catch (error) {
      console.error(error.message);
      return null;
    }
  },

  delete: async function (clause = {}) {
    try {
      await prisma.workspaces.delete({
        where: clause,
      });
      return true;
    } catch (error) {
      console.error(error.message);
      return false;
    }
  },

  where: async function (clause = {}, limit = null, orderBy = null) {
    try {
      const results = await prisma.workspaces.findMany({
        where: clause,
        ...(limit !== null ? { take: limit } : {}),
        ...(orderBy !== null ? { orderBy } : {}),
      });
      return results;
    } catch (error) {
      console.error(error.message);
      return [];
    }
  },

  whereWithUser: async function (
    user,
    clause = {},
    limit = null,
    orderBy = null
  ) {
    if ([ROLES.admin, ROLES.manager].includes(user.role))
      return await this.where(clause, limit, orderBy);

    try {
      const workspaces = await prisma.workspaces.findMany({
        where: {
          ...clause,
          workspace_users: {
            some: {
              user_id: user.id,
            },
          },
        },
        ...(limit !== null ? { take: limit } : {}),
        ...(orderBy !== null ? { orderBy } : {}),
      });
      return workspaces;
    } catch (error) {
      console.error(error.message);
      return [];
    }
  },

  whereWithUsers: async function (clause = {}, limit = null, orderBy = null) {
    try {
      const workspaces = await this.where(clause, limit, orderBy);
      for (const workspace of workspaces) {
        const userIds = (
          await WorkspaceUser.where({ workspace_id: Number(workspace.id) })
        ).map((rel) => rel.user_id);
        workspace.userIds = userIds;
      }
      return workspaces;
    } catch (error) {
      console.error(error.message);
      return [];
    }
  },

  updateUsers: async function (workspaceId, userIds = []) {
    try {
      await WorkspaceUser.delete({ workspace_id: Number(workspaceId) });
      await WorkspaceUser.createManyUsers(userIds, workspaceId);
      return { success: true, error: null };
    } catch (error) {
      console.error(error.message);
      return { success: false, error: error.message };
    }
  },

  resetWorkspaceChatModels: async () => {
    try {
      await prisma.workspaces.updateMany({
        data: {
          chatModel: null,
        },
      });
      return { success: true, error: null };
    } catch (error) {
      console.error("Error resetting workspace chat models:", error.message);
      return { success: false, error: error.message };
    }
  },
};

module.exports = { Workspace };