43 lines
1.1 KiB
Go
43 lines
1.1 KiB
Go
package city
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import (
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"context"
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"github.com/gofiber/fiber/v2"
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)
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// If city does not exist, do not allow one to access the API.
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func (h *CityHandler) checkIfCityExistsMiddleware(c *fiber.Ctx) error {
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// Create a new customized context.
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customContext, cancel := context.WithCancel(context.Background())
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defer cancel()
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// Fetch parameter.
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targetedCityID, err := c.ParamsInt("cityID")
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if err != nil {
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return c.Status(fiber.StatusBadRequest).JSON(&fiber.Map{
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"status": "fail",
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"message": "Please specify a valid city ID!",
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})
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}
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// Check if city exists.
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searchedCity, err := h.cityService.FetchCity(customContext, targetedCityID)
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if err != nil {
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return c.Status(fiber.StatusInternalServerError).JSON(&fiber.Map{
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"status": "fail",
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"message": err.Error(),
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})
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}
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if searchedCity == nil {
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return c.Status(fiber.StatusBadRequest).JSON(&fiber.Map{
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"status": "fail",
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"message": "There is no city with this ID!",
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})
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}
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// Store in locals for further processing in the real handler.
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c.Locals("cityID", targetedCityID)
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return c.Next()
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}
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