const User = require("../database/models/user")
const { getUserValidator, getIdValidator, getUpdatedUserValidator } = require("../validators/users")
const mediator = require('../mediator/userMediator')

const getUsers = async (req, res, next) => {
    const allUsers = await User.find({})
    return res.status(200).send(allUsers)
}

const getUser = async (req, res, next) => {
    try {
        const id = req.params.id
        const errId = getIdValidator.validate(id).error
        if (errId) {
            return res.status(404).send(errId.message)
        }
        const result = await mediator.getUser(id)

        if (!result.succeeded) {
            return res.status(400).send(result.error)
        }
        return res.status(200).json(result.value)
    } catch (e) {
        next(e)
    }
}

const createUser = async (req, res, next) => {
    try {
        const userModel = req.body

        const err = getUserValidator.validate(userModel).error
        if (err) {
            return res.status(404).send(err.message)
        }
        const result = await mediator.createUser(userModel)
        if (!result.succeeded) {
            return res.status(400).send(result.error)
        }

        return res.status(201).json(result.value)
    } catch (e) {
        next(e)
    }
}

const updateUser = async (req, res, next) => {
    try {
        const id = req.params.id
        const errId = getIdValidator.validate(id).error
        if (errId) {
            return res.status(400).send(errId.message)
        }

        const objBody = req.body

        const err = getUpdatedUserValidator.validate(objBody).error
        if (err) {
            return res.status(400).send(err.message)
        }
        const result = await mediator.updateUser(id, objBody)
        if (!result.succeeded) {
            return res.status(400).send(result.error)
        }
        return res.status(200).send(result.value)
    } catch (e) {
        next(e)
    }
}

const deleteUser = async (req, res, next) => {
    try {
        const id = req.params.id
        const errId = getIdValidator.validate(id).error
        if (errId) {
            return res.status(400).send(errId.message)
        }

        const result = await mediator.deleteUser(id)
        if (!result.succeeded) {
            return res.status(400).send(result.error)
        }
        return res.status(204).send(result.value)
    } catch (e) {
        next(e)
    }
}

const updateUserContacts = async (req, res, next) => {
    try {
        const userFound = true
        if (!userFound) {
            return res.status(404).send('user not found')
        }
        if (!req.body) {
            return res.status(400).send('invalid input parameters')
        }
        return res.status(200).send('user contacts updated successfully')
    } catch (e) {
        next(e)
    }
}

module.exports = { getUsers, getUser, createUser, updateUserContacts, updateUser, deleteUser }