package v1

import (
	"context"

	"git.badhouseplants.net/softplayer/softplayer-backend/internal/controllers"
	"git.badhouseplants.net/softplayer/softplayer-backend/internal/helpers/email"
	"git.badhouseplants.net/softplayer/softplayer-go-proto/pkg/accounts"
	"github.com/golang/protobuf/ptypes/empty"
	"google.golang.org/grpc"
	"google.golang.org/grpc/metadata"
	"google.golang.org/protobuf/types/known/emptypb"

	ctrl "sigs.k8s.io/controller-runtime"
)

func NewAccountRPCImpl(contoller ctrl.Manager, hashCost int16, email *email.EmailConf, devMode bool) *AccountsServer {
	return &AccountsServer{
		Controller: contoller,
		Params: &controllers.AccountParams{
			HashCost: hashCost,
		},
		emailConfig: *email,
		devMode:     devMode,
	}
}

type AccountsServer struct {
	accounts.UnimplementedAccountsServer
	Controller  ctrl.Manager
	Params      *controllers.AccountParams
	emailConfig email.EmailConf
	// When dev mode is enabled, email won't be sent, instead the code will be returned in metadata
	devMode bool
}

func (a *AccountsServer) SignUp(ctx context.Context, in *accounts.AccountWithPassword) (*accounts.AccountFullWithToken, error) {
	data := populateData(in.Data.GetName(), in.Password.GetPassword(), in.Data.GetEmail())
	acc := populateAccount(data, a.Controller)

	if err := acc.Create(ctx); err != nil {
		return nil, err
	}

	return &accounts.AccountFullWithToken{
		Id: &accounts.AccountId{
			Id: acc.Data.UUID,
		},
		Data: &accounts.AccountData{
			Name:  acc.Data.Username,
			Email: acc.Data.Email,
		},
		Token: acc.Token,
	}, nil
}

func (a *AccountsServer) SignIn(ctx context.Context, in *accounts.AccountWithPassword) (*accounts.AccountFullWithToken, error) {
	data := populateData(in.Data.GetName(), in.Password.GetPassword(), in.Data.GetEmail())
	acc := populateAccount(data, a.Controller)

	if err := acc.Login(ctx); err != nil {
		return nil, err
	}

	return &accounts.AccountFullWithToken{
		Id: &accounts.AccountId{
			Id: acc.Data.UUID,
		},
		Data: &accounts.AccountData{
			Name:  acc.Data.Username,
			Email: acc.Data.Email,
		},
		Token: acc.Token,
	}, nil
}

func (a *AccountsServer) ResetPassword(ctx context.Context, in *accounts.AccountData) (*empty.Empty, error) {
	data := populateData(in.GetName(), "", in.GetEmail())
	acc := populateAccount(data, a.Controller)
	code, err := acc.ResetPassword(ctx, a.emailConfig)
	if err != nil {
		return nil, err
	}

	if a.devMode {
		header := metadata.Pairs("code", code)
		if err := grpc.SendHeader(ctx, header); err != nil {
			return nil, err
		}
	}

	return &emptypb.Empty{}, nil
}

func populateData(username, password, email string) *controllers.AccountData {
	return &controllers.AccountData{
		Username: username,
		Password: password,
		Email:    email,
	}
}

func populateAccount(data *controllers.AccountData, controller ctrl.Manager) *controllers.Account {
	return &controllers.Account{
		Controller: controller,
		Data:       data,
	}
}