const fs = require('fs')
const mockPath = './backend/db/_generated.js'

// Insert here how many users you would like to generate:
const total = 100

// Amount of responses for a complete survey
const questions = 13

// Seekers per 100 profiles
const percentageOfSeekers = 95

// Values for responses
const possibleResponses = {
    not_important: '120',
    some_what_important: '140',
    important: '160',
    very_important: '180',
    extremely_important: '200',
    mandatory: '400',
}

const possibleZipcodes = [
    '90065', // Glassel
    '90012', // Chinatown
    '90240', // Downey
    '91030', // South Pasadena
    '91201', // Glendale
    '91399', // Woodland Hills
    '91401', // Van Nuys
    '90840', // Long Beach
    '91001', // Altadena
    '91011', // La Canada Flintridge
    '97075', // Beaverton
]

// Helper functions
const randomNumber = max => {
    return Math.floor(Math.random() * max) < 1
        ? 1
        : Math.floor(Math.random() * max)
}

const randomValFrom = arr => arr[randomNumber(arr.length)]

const generate = (classObj, amount, meta) => {
    const instances = []
    for (let i = 0; i < amount; i++) {
        instances.push(new classObj(i + 1, meta))
    }
    return instances
}

class User {
    constructor(id) {
        this.user_id = id
        this.user_name = ''
        this.user_email = ''
        this.is_admin = false
        this.is_poster = false
    }
}
class Profile {
    constructor(id) {
        this.user_id = id
        this.profile_id = id
    }
}
class Response {
    constructor(id) {
        this.response_id = id
        this.profile_id = null
        this.response_key_id = null
        this.val = null
    }
}

const users = generate(User, total)
users.forEach(
    user => (user.is_poster = randomNumber(100) > percentageOfSeekers ? 1 : 0),
)

const profiles = generate(Profile, total)

// Generate responses, then fill in details
const responses = generate(Response, total * questions)
profiles.forEach((profile, i) => {
    const startingIndex = i * questions
    for (let k = 0; k < questions; k++) {
        const resToEdit = responses[startingIndex + k]
        resToEdit.response_key_id = k + 1
        resToEdit.profile_id = profile.profile_id
        resToEdit.val =
            k + 1 == questions
                ? randomValFrom(possibleZipcodes)
                : randomValFrom(Object.values(possibleResponses))
    }
})

// console.log(responses)
// console.log(users)
const jobPosters = users.filter(user => user.is_poster > 0).length
const write = async () => {
    await fs.writeFile(mockPath, '', () => {})
    fs.appendFile(
        mockPath,
        `/**\n * Generated ${total} profiles @${Date.now()}\n * ${jobPosters}:${
            total - jobPosters
        } posters|seekers\n * ---\n */\n\n` +
            'module.exports = ' +
            JSON.stringify({ users, responses }),
        err => {
            if (err) {
                console.error(err)
                return
            }
        },
    )
}
write()