README.md

Step 4. Let's make HTTP API

addDriver

func addDriver(c echo.Context) error {
	p := &Payload{}
	if err := c.Bind(p); err != nil {
		return c.JSON(http.StatusUnsupportedMediaType, &DefaultResponse{
			Success: false,
			Message: "Set content-type application/json or check your payload data",
		})
	}
	return c.JSON(http.StatusOK, &DefaultResponse{
		Success: false,
		Message: "Added",
	})
}

As you can see here, there is an incomprehensible method c.Bind. This method links the data, which we receive to the structure. We always need to pass a pointer to the structure.

getDriver

func getDriver(c echo.Context) error {
	driverID := c.Param("id")
	id, err := strconv.Atoi(driverID)
	if err != nil {
		return c.JSON(http.StatusBadRequest, &DefaultResponse{
			Success: false,
			Message: "could not convert string to integer",
		})
	}
	return c.JSON(http.StatusOK, &DriverResponse{
		Success: true,
		Message: "found",
		Driver:  id,
	})
}

deleteDriver

func deleteDriver(c echo.Context) error {
	driverID := c.Param("id")
	_, err := strconv.Atoi(driverID)
	if err != nil {
		return c.JSON(http.StatusBadRequest, &DefaultResponse{
			Success: false,
			Message: "could not convert string to integer",
		})
	}
	return c.JSON(http.StatusOK, &DefaultResponse{
		Success: true,
		Message: "removed",
	})
}

NearestDrivers

func nearestDrivers(c echo.Context) error {
	lat := c.Param("lat")
	lon := c.Param("lon")
	if lat == "" || lon == "" {
		return c.JSON(http.StatusBadRequest, &DefaultResponse{
			Success: false,
			Message: "empty coordinates",
		})
	}
	_, err := strconv.ParseFloat(lat, 64)
	if err != nil {
		return c.JSON(http.StatusBadRequest, &DefaultResponse{
			Success: false,
			Message: "failed convert float",
		})
	}
	_, err = strconv.ParseFloat(lon, 64)
	if err != nil {
		return c.JSON(http.StatusBadRequest, &DefaultResponse{
			Success: false,
			Message: "failed convert float",
		})
	}
	// TODO: Add nearest
	return c.JSON(http.StatusOK, &NearestDriverResponse{
		Success: false,
		Message: "found",
	})
}

Congratulations!

We have implemented the "stub" methods. Considering that we don't have storage currently, we will begin to implement in the next steps.