import { model, Schema, ObjectId } from 'mongoose';

export const UserType = Object.freeze({
    USER: 'user',
    MONITOR: 'monitor',
    ADMIN: 'admin'
});

export const AlarmType = Object.freeze({
    FALL: 'fall',
    TOILET: 'toilet'
});

export const deviceSchema = new Schema(
    {
        name: {
            type: String,
            required: true,
            trim: true
        },
        lastSeen: {
            type: Date,
            default: Date.now,
            required: true
        }
    },
    {
        timestamps: {
            createdAt: true,
            updatedAt: false
        }
    }
);

export const alarmSchema = new Schema(
    {
        reason: {
            type: String,
            enum: Object.values(AlarmType),
            required: true
        }
    },
    {
        timestamps: {
            createdAt: true,
            updatedAt: false
        }
    }
);

/**
 * User schema for MongoDB.
 * @type {module:mongoose.Schema}
 */
export const userSchema = new Schema(
    {
        username: {
            type: String,
            required: true,
            unique: true,
            trim: true
        },
        passwordHash: {
            type: String,
            required: true
        },
        email: {
            type: String,
            required: true,
            unique: true,
            trim: true
        },
        type: {
            type: String,
            enum: Object.values(UserType),
            default: 'user'
        },
        devices: {
            type: [deviceSchema],
            default: []
        },
        alarm: {
            type: alarmSchema
        },
        monitoredUsers: {
            type: [ObjectId],
            ref: 'users'
        },
        balance: {
            type: Number,
            default: 0
        },
        spendHistory: {
            type: [ObjectId],
            ref: 'spendHistory'
        },
        emergencyContacts: {
            type: String
        },
        medicalInfo: {
            type: String
        },
        location: {
            // https://stackoverflow.com/a/27218808
            // Longtitute, Latitude info
            type: [Number],
            index: { type: '2dsphere', sparse: true },
            count: 2
        }
    },
    {
        timestamps: {
            createdAt: true,
            updatedAt: false
        }
    }
);

export const DbUser = model('user', userSchema);

console.log('[MONGODB] User schema initialized successfully!');