package handlers

import (
	"github.com/gofiber/fiber/v2"
	"github.com/google/uuid"
	"relay-server/database"
	"relay-server/utils"
)

func DeleteContact(c *fiber.Ctx) error {
	type params struct {
		ContactID      uuid.UUID `params:"contactID"`
		ConversationID uuid.UUID `params:"conversationID"`
	}

	p := new(params)
	if err := c.ParamsParser(p); err != nil {
		return utils.NewError(utils.ErrInvalidInput, "Invalid params", err)
	}

	if p.ContactID == uuid.Nil {
		return utils.NewError(utils.ErrInvalidInput, "contact ID is empty", nil)
	}
	if p.ConversationID == uuid.Nil {
		return utils.NewError(utils.ErrInvalidInput, "conversation ID is empty", nil)
	}

	err := database.DeleteContact(database.DB, p.ContactID, p.ConversationID)
	if err != nil {
		return err
	}

	return c.Status(fiber.StatusOK).JSON(fiber.Map{"message": "Contact deleted"})
}

func InsertContact(c *fiber.Ctx) error {
	type params struct {
		ContactUsername string `params:"contactUsername"`
	}

	userID := c.Locals("userID").(uuid.UUID)

	p := new(params)
	if err := c.ParamsParser(p); err != nil {
		return utils.NewError(utils.ErrInvalidInput, "Invalid params", err)
	}

	if p.ContactUsername == "" {
		return utils.NewError(utils.ErrInvalidInput, "contact username is empty", nil)
	}

	if !utils.IsValidUsername(p.ContactUsername) {
		return utils.NewError(utils.ErrInvalidInput, "invalid username", nil)
	}

	contactID, err := database.GetUserID(database.DB, p.ContactUsername)
	if err != nil {
		return err
	}

	newContacts, err := database.InsertContact(database.DB, userID, contactID, p.ContactUsername)
	if err != nil {
		return err
	}

	return c.Status(fiber.StatusOK).JSON(newContacts)
}

func GetContacts(c *fiber.Ctx) error {
	userID := c.Locals("userID").(uuid.UUID)

	contacts, err := database.GetContacts(database.DB, userID)
	if err != nil {
		return err
	}

	return c.Status(fiber.StatusOK).JSON(contacts)
}

func GetContactSuggestions(c *fiber.Ctx) error {
	type params struct {
		ContactUsername string `params:"contactUsername"`
	}

	p := new(params)
	if err := c.ParamsParser(p); err != nil {
		return utils.NewError(utils.ErrInvalidInput, "Invalid params", err)
	}
	if p.ContactUsername == "" {
		return utils.NewError(utils.ErrInvalidInput, "contact username is empty", nil)
	}

	suggestions, err := database.ContactSuggestion(database.DB, p.ContactUsername)
	if err != nil {
		return err
	}
	return c.Status(fiber.StatusOK).JSON(suggestions)
}