const bcrypt = require("bcryptjs")
const usersRepo = require("../repositories/usersRepo")
const tokensService = require("./tokensService")
const identitiesRepo = require("../repositories/identitiesRepo")
const credentialsRepo = require("../repositories/credentialsRepo")
const { DefaultError } = require("../errors/errors")

async function registerLocal({ identifier, password, profile = { displayName, avatarURL } }) {
    try {
        const user = await usersRepo.create(identifier, process.env.SERVER_UUID, null, profile.displayName, profile.avatarURL)
        const hashedPassword = await bcrypt.hash(password, Number(process.env.BCRYPT_SALT))
        const credentials = await credentialsRepo.create(user.id, hashedPassword)
        if (Array.isArray(credentials)) {
            throw new DefaultError(500, "Internal Server Error", "UserRegistration")
        }
        return user
    } catch (error) {
        throw error
    }
}

async function validatePassword({ password, passwordHash }) {
    try {
        await bcrypt.compare(password, passwordHash)
    } catch (error) {
        throw new DefaultError(401, "Bad credentials", "Wrong password")
    }
}

async function loginLocal({ identifier, password }) {
    try {
        const user = await usersRepo.findByIdentifier(identifier)
        const credentials = await credentialsRepo.findByUserId(user.id)
        await validatePassword({ password: password, passwordHash: credentials.passwordHash })
        const accessToken = await tokensService.signToken(user)
        const refreshToken = await tokensService.signRefreshToken(user.id)
        return { user, tokens: { accessToken, refreshToken } }
    } catch (error) {
        console.log(error)
        throw new DefaultError(500, "Internal Server Error", error.toString())
    }
}

async function refreshAccessToken({ userId, refreshToken }) {
    try {
        await tokensService.verifyRefreshToken(refreshToken)
        await tokensService.revokeRefreshToken(refreshToken)
        const user = await usersRepo.findById(userId)
        const newAccessToken = await tokensService.signToken(user)
        const newRefreshToken = await tokensService.signRefreshToken(userId)
        return { accessToken: newAccessToken, refreshToken: newRefreshToken }
    } catch (error) {
        throw error
    }
}

async function changePassword({ userId, password, newPassword }) {
    try {
        const credentials = await credentialsRepo.findByUserId(userId)
        await validatePassword({ password, passwordHash: credentials.passwordHash })
        await credentialsRepo.updatePassword(userId, newPassword)
        return true
    } catch (error) {
        throw error
    }
}

async function resetPassword({ userId, newPassword }) {
    try {
        await credentialsRepo.updatePassword(userId, newPassword)
        return true
    } catch (error) {
        throw error
    }
}

module.exports = {
    loginLocal,
    resetPassword,
    registerLocal,
    changePassword,
    refreshAccessToken
}