const mongoose = require('mongoose');
const { MAX_TAGS } = require('../lib/tagConfig');

const Schema = mongoose.Schema;

const photoSchema = new Schema({
    filename: {
        type: String,
        required: true
    },
    path: {
        type: String,
        required: true
    },
    variants: {
        medium: { type: String },
        thumb: { type: String },
    },
    caption: {
        type: String,
        required: true
    },
    tags: {
        type: [String],
        required: true,
        validate: [
            {
                validator: (arr) => Array.isArray(arr) && arr.length > 0 && arr.length <= MAX_TAGS,
                message: `Tags must include between 1 and ${MAX_TAGS} items.`
            }
        ]
    },
    hash: {
        type: String,
        unique: true,
        sparse: true,
        index: true
    }
}, {
    timestamps: true,
});

const Photo = mongoose.model('Photo', photoSchema);

module.exports = Photo;