const Schmervice = require('@hapipal/schmervice')

const engageEveryone = allYins => {
    let done
    do {
        console.log('rerunning...')
        done = true
        allYins.forEach(yin => {
            // Keep matching if no true pairing is found
            console.log(yin.realId, yin.otp?.realId)
            if (!yin.otp) {
                done = false
                const yang = yin.getNextCandidate()
                if (!yang.otp || yang.prefers(yin)) {
                    yin.engageTo(yang)
                }
            } else {
                console.log(yin.otp.realId)
            }
        })
    } while (!done)
}
class ProfileFacade {
    constructor(id, matchQueue) {
        this.realId = id ? id : undefined

        this.matchCandidateIndex = 0
        this.otp = null
        this.matchQueue = matchQueue?.length ? matchQueue : []
        this.fOrder = []
    }
    clearPlaceholderMatches() {
        this.matchQueue = this.matchQueue.filter(match => match.realId == false)
        this.fOrder = this.fOrder.filter(
            potentialFiance => potentialFiance.realId == false,
        )
        if (this.otp && this.otp.realId) {
            this.otp = null
        }
    }
    rank(id) {
        const idQueue = this.matchQueue.map(
            profileFacade => profileFacade.realId,
        )
        return idQueue.includes(id)
            ? idQueue.indexOf(id)
            : this.matchQueue.length + 1
    }
    prefers(p) {
        return this.rank(p.realId) < this.rank(this.otp.realId)
    }
    getNextCandidate() {
        if (this.matchCandidateIndex >= this.matchQueue.length) return null
        this.matchCandidateIndex = this.matchCandidateIndex + 1
        return this.matchQueue[this.matchCandidateIndex - 1]
    }
    engageTo(p) {
        if (p.otp) {
            p.otp.otp = null
        }
        if (this.otp) {
            this.otp.otp = null
        }

        p.otp = this
        p.fOrder.unshift(this)

        this.otp = p
        this.fOrder.unshift(p)
        console.log(
            'partners pref: ',
            this.otp.matchQueue.map(f => f.realId).indexOf(this.realId) + 1,
            'choice',
        )
    }
}

module.exports = class MatchService extends Schmervice.Service {
    constructor(...args) {
        super(...args)
    }
    async calcMatches(allQueuesByType) {
        const seekerIds = Object.keys(allQueuesByType['seeker']).map(id => ({
            profile_id: parseInt(id),
            queue: allQueuesByType['seeker'][id],
        }))
        const posterIds = Object.keys(allQueuesByType['poster']).map(id => ({
            profile_id: parseInt(id),
            queue: allQueuesByType['poster'][id],
        }))

        const diff = Math.abs(posterIds.length - seekerIds.length)
        const smallerList =
            posterIds.length < seekerIds.length ? posterIds : seekerIds
        // ADD DUMMY IDS TO THE SMALLER LIST
        for (let d = 0; d < diff; d++) {
            smallerList.push({ profile_id: 'dummy', queue: [] })
        }
        console.log(seekerIds)
        console.log(posterIds)
        // const yins = seekerIds.map(id => allProfileFacadesWithQueue[id])
        // const yangs = posterIds.map(id => allProfileFacadesWithQueue[id])

        // You only need to engage from one side
        // engageEveryone(yins)
        return []
    }
}