goext/ginext/response.go
2023-07-24 11:11:15 +02:00

119 lines
2.6 KiB
Go

package ginext
import (
"fmt"
"github.com/gin-gonic/gin"
"gogs.mikescher.com/BlackForestBytes/goext/exerr"
json "gogs.mikescher.com/BlackForestBytes/goext/gojson"
)
type HTTPResponse interface {
Write(g *gin.Context)
}
type jsonHTTPResponse struct {
statusCode int
data any
}
func (j jsonHTTPResponse) Write(g *gin.Context) {
g.Render(j.statusCode, json.GoJsonRender{Data: j.data, NilSafeSlices: true, NilSafeMaps: true})
}
type emptyHTTPResponse struct {
statusCode int
}
func (j emptyHTTPResponse) Write(g *gin.Context) {
g.Status(j.statusCode)
}
type textHTTPResponse struct {
statusCode int
data string
}
func (j textHTTPResponse) Write(g *gin.Context) {
g.String(j.statusCode, "%s", j.data)
}
type dataHTTPResponse struct {
statusCode int
data []byte
contentType string
}
func (j dataHTTPResponse) Write(g *gin.Context) {
g.Data(j.statusCode, j.contentType, j.data)
}
type fileHTTPResponse struct {
mimetype string
filepath string
filename *string
}
func (j fileHTTPResponse) Write(g *gin.Context) {
g.Header("Content-Type", j.mimetype) // if we don't set it here gin does weird file-sniffing later...
if j.filename != nil {
g.Header("Content-Disposition", fmt.Sprintf("attachment; filename=\"%s\"", *j.filename))
}
g.File(j.filepath)
}
type redirectHTTPResponse struct {
statusCode int
url string
}
func (j redirectHTTPResponse) Write(g *gin.Context) {
g.Redirect(j.statusCode, j.url)
}
type jsonAPIErrResponse struct {
err *exerr.ExErr
}
func (j jsonAPIErrResponse) Write(g *gin.Context) {
j.err.Output(g)
}
func Status(sc int) HTTPResponse {
return &emptyHTTPResponse{statusCode: sc}
}
func JSON(sc int, data any) HTTPResponse {
return &jsonHTTPResponse{statusCode: sc, data: data}
}
func Data(sc int, contentType string, data []byte) HTTPResponse {
return &dataHTTPResponse{statusCode: sc, contentType: contentType, data: data}
}
func Text(sc int, data string) HTTPResponse {
return &textHTTPResponse{statusCode: sc, data: data}
}
func File(mimetype string, filepath string) HTTPResponse {
return &fileHTTPResponse{mimetype: mimetype, filepath: filepath}
}
func Download(mimetype string, filepath string, filename string) HTTPResponse {
return &fileHTTPResponse{mimetype: mimetype, filepath: filepath, filename: &filename}
}
func Redirect(sc int, newURL string) HTTPResponse {
return &redirectHTTPResponse{statusCode: sc, url: newURL}
}
func APIError(g *gin.Context, e error) HTTPResponse {
return &jsonAPIErrResponse{
err: exerr.FromError(e),
}
}
func NotImplemented(g *gin.Context) HTTPResponse {
return APIError(g, exerr.New(exerr.TypeNotImplemented, "").Build())
}