const { DataTypes, Model } = require("sequelize");
const sequelize = require("../../config/sequelize");

class Follower extends Model { }

const FollowerModel = () => {
    Follower.init(
        {
            userId: {
                type: DataTypes.STRING(24),
                allowNull: false,
                primaryKey: true,
                references: {
                    model: 'user',
                    key: 'id'
                }
            },
            followerId: {
                type: DataTypes.STRING(24),
                allowNull: false,
                primaryKey: true,
                references: {
                    model: 'user',
                    key: 'id'
                }
            }
        },
        {
            sequelize,
            tableName: 'follower',
            timestamps: false,
            indexes: [
                {
                    name: "PRIMARY",
                    unique: true,
                    using: "BTREE",
                    fields: [
                        { name: "userId" },
                        { name: "followerId" },
                    ]
                },
                {
                    name: "followerId",
                    using: "BTREE",
                    fields: [
                        { name: "followerId" },
                    ]
                },
            ]
        }
    );

    Follower.prototype.toJSONFor = function () {
        return {
            userId: this.userId,
            followerId: this.followerId
        };
    };

    return Follower;
};

module.exports = FollowerModel;