package handlers

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

func GetMessages(c *fiber.Ctx) error {
	type params struct {
		conversationID uuid.UUID `params:"conversationID"`
	}
	type query struct {
		limit  int `query:"limit"`
		cursor int `query:"cursor"`
	}
	userID := c.Locals("userID").(uuid.UUID)

	p := new(params)
	q := new(query)
	if err := c.ParamsParser(p); err != nil {
		return utils.NewError(utils.ErrInvalidInput, "Invalid params", err)
	}
	if err := c.QueryParser(q); err != nil {
		return utils.NewError(utils.ErrInvalidInput, "Invalid query", err)
	}
	if p.conversationID == uuid.Nil {
		return utils.NewError(utils.ErrInvalidInput, "conversation ID is empty", nil)
	}

	messages, err := database.GetMessages(database.DB, userID, p.conversationID, q.limit, q.cursor)
	if err != nil {
		return err
	}
	if len(messages) == 0 {
		return c.JSON(fiber.Map{"message": "No messages found"})
	}

	return c.JSON(fiber.Map{"messages": messages})
}