package services

import (
	"net/http"
	"netina/commands"
	"netina/models"
	cm "netina/models/commands"
	"netina/queries"
	license_repository "netina/repositories/license"
	"netina/validation"
	"strconv"
	"time"

	"github.com/labstack/echo/v4"
)


type LicenseService struct {
	CommandRepo license_repository.LicenseCommandRepository
	QueryRepo   license_repository.LicenseQueryRepository
}

func (s *LicenseService) CreateLicense(c echo.Context) error {
	user := c.Get("user").(*models.JWTClaims)
	if user == nil {
		return echo.ErrUnauthorized
	}

	u , err := FindUser(user.ID)
	if err != nil {
		return err
	}

	license := new(cm.CreateLicenseCommand)
	if err := c.Bind(license); err != nil {
		return c.JSON(http.StatusBadRequest, map[string]string{"error": "Invalid request payload"})
	}
	if err := validation.ValidateStruct(license); err != nil {
		return c.JSON(http.StatusBadRequest, map[string]string{"error": err.Error()})
	}

	plan , err := FindPlan(license.Plan_id)
	if err != nil {
		return err
	}

	period := plan.Period

	// convert nano seconds to days
	expireDate := time.Now().Add((time.Duration(period)*1000000000*3600*24))

	license.ExpireDate = expireDate

	

	handler := commands.CreateLicenseHandler{Repository: s.CommandRepo}
	if err := handler.Handle(*license , u.Name); err != nil {
		return c.JSON(http.StatusInternalServerError, map[string]string{"error": err.Error()})
	}

	return c.JSON(http.StatusCreated, license)
}

func (s *LicenseService) GetLicense(c echo.Context) error {
	id, err := strconv.Atoi(c.Param("id"))
	if err != nil {
		return c.JSON(http.StatusBadRequest, map[string]string{"error": "Invalid license ID"})
	}

	handler := queries.GetLicenseHandler{Repository: s.QueryRepo}
	license, err := handler.Handle(uint(id))
	if err != nil {
		return c.JSON(http.StatusNotFound, map[string]string{"error": err.Error()})
	}

	return c.JSON(http.StatusOK, license)
}

func (s *LicenseService) UpdateLicense(c echo.Context) error {
	user := c.Get("user").(*models.JWTClaims)
	if user == nil {
		return echo.ErrUnauthorized
	}

	u , err := FindUser(user.ID)
	if err != nil {
		return err
	}

	id, err := strconv.Atoi(c.Param("id"))
	if err != nil {
		return c.JSON(http.StatusBadRequest, map[string]string{"error": "Invalid license ID"})
	}

	license := new(cm.UpdateLicenseCommand)
	if err := c.Bind(license); err != nil {
		return c.JSON(http.StatusBadRequest, map[string]string{"error": "Invalid request payload"})
	}

	handle := queries.GetLicenseHandler{Repository: s.QueryRepo}
	ls, err := handle.Handle(uint(id))
	if err != nil {
		return c.JSON(http.StatusNotFound, map[string]string{"error": err.Error()})
	}

	numberOfRenewals := ls.NumberOfRenewals + 1

	license.NumberOfRenewals = numberOfRenewals

	plan , err := FindPlan(license.Plan_id)
	if err != nil {
		return err
	}

	period := plan.Period

	// convert nano seconds to days
	expireDate := ls.ExpireDate.Add((time.Duration(period)*1000000000*3600*24))

	license.ExpireDate = expireDate

	if err := validation.ValidateStruct(license); err != nil {
		return c.JSON(http.StatusBadRequest, map[string]string{"error": err.Error()})
	}

	

	handler := commands.UpdateLicenseHandler{Repository: s.CommandRepo}
	updatedLicense, err := handler.Handle(uint(id), *license , u.Name)
	if err != nil {
		return c.JSON(http.StatusInternalServerError, map[string]string{"error": err.Error()})
	}

	return c.JSON(http.StatusOK, updatedLicense)
}

func (s *LicenseService) RemoveLicense(c echo.Context) error {
	id, err := strconv.Atoi(c.Param("id"))
	if err != nil {
		return c.JSON(http.StatusBadRequest, map[string]string{"error": "Invalid license ID"})
	}

	handler := commands.RemoveLicenseHandler{Repository: s.CommandRepo}
	if err := handler.Handle(uint(id)); err != nil {
		return c.JSON(http.StatusInternalServerError, map[string]string{"error": err.Error()})
	}

	return c.NoContent(http.StatusNoContent)
}