const Model = require('objection').Model

/* global WIKI */

/**
 * Navigation model
 */
module.exports = class Navigation extends Model {
  static get tableName() { return 'navigation' }
  static get idColumn() { return 'key' }

  static get jsonSchema () {
    return {
      type: 'object',
      required: ['key'],

      properties: {
        key: {type: 'string'},
        config: {type: 'array', items: {type: 'object'}}
      }
    }
  }

  static async getTree({ cache = false } = {}) {
    if (cache) {
      const navTreeCached = await WIKI.redis.get('nav:sidebar')
      if (navTreeCached) {
        return JSON.parse(navTreeCached)
      }
    }
    const navTree = await WIKI.models.navigation.query().findOne('key', 'site')
    if (navTree) {
      if (cache) {
        await WIKI.redis.set('nav:sidebar', JSON.stringify(navTree.config), 'EX', 300)
      }
      return navTree.config
    } else {
      WIKI.logger.warn('Site Navigation is missing or corrupted.')
      return []
    }
  }
}