import { ref } from 'vue'
import { fetchResponsesByProfileId } from '../services'
import { surveyFactory } from '../utils'

/**
 * Logged in profile state manager
 * Sort of a util and service hybrid
 */
class Login {
    constructor() {
        this._loading = false
        
        // Make reactive with vue observer
        this.id = ref(null)

        this.responses = []
        this.tags = []
    }
    get isLoading() {
        return this._loading
    }
    /**
     * Track login separate from complete-ess
     * so a user can login but attached profile
     * can forward to survey
     * @returns {boolean}
     */
    get isLoggedIn() {
        return this.id.value != null
    }
    /**
     * Combine questions retrieved from the database and
     * questions defined in out lang file and 
     * copare to responses stored
     * @returns {boolean}
     */
    get isComplete() {
        return this.responses.length == surveyFactory.questionsFromDb.length && surveyFactory.questionsFromDb.length > 0
    }
    /**
     * Check that some responses are set
     * @returns {boolean}
     */
    get hasResponses() {
        return this.responses.length && this.responses.length > 0
    } 

    /**
     * Login a profile by id number
     * @param {number} profileId
     * @returns {number} stored reactive id
     */
     async login(profileId) {
        console.warn('logging in:', profileId)
        this.id.value = parseInt(profileId)
        return this.id.value
    }
    logout() { this.id.value = null }
    
    async getTags() {
        try {
            const tags = []
            this.setTags(tags)
        } catch (err) {
            console.error(err)
        }
    }
    setTags(tags) { this.tags = tags }

    async getResponses() {
        try {
            const responseList = await fetchResponsesByProfileId(this.id)
            this.setResponses(responseList)
        } catch (err) {
            console.error(err)
        }
    }
    setResponses(responses) { this.responses = responses }
}

const currentProfile = new Login()

export { currentProfile }