agecem-org/api_handlers/api_handlers.go

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package api_handlers
import (
"context"
"net/http"
"sort"
"git.agecem.com/agecem/agecem-org/config"
"git.agecem.com/agecem/agecem-org/media"
"git.agecem.com/agecem/agecem-org/models"
"github.com/labstack/echo/v4"
"github.com/minio/minio-go/v7"
"github.com/spf13/viper"
)
// API Handlers
// HandleV1 affiche les routes accessibles.
// Les routes sont triées selon .Path, pour les rendre plus facilement navigables.
func HandleV1(c echo.Context) error {
routes := c.Echo().Routes()
sort.Slice(routes, func(i, j int) bool { return routes[i].Path < routes[j].Path })
return c.JSON(http.StatusOK, routes)
}
// HandleV1Seed créé des buckets dans minio selon la liste de buckets dans server.documents.buckets
// Les buckets sont créés avec paramètres par défaut, et sont ensuite visible dans /v1/bucket.
func HandleV1Seed(c echo.Context) error {
var response models.V1SeedResponse
mediaClient, err := media.NewMediaClientFromViper()
if err != nil {
response.StatusCode = http.StatusInternalServerError
response.Message = "Error during media.NewMediaClientFromViper()"
response.Error = err.Error()
return c.JSON(response.StatusCode, response)
}
new_buckets, err := mediaClient.Seed()
response.Data.Buckets = new_buckets
if err != nil {
response.StatusCode = http.StatusInternalServerError
response.Message = "Error during mediaClient.Seed()"
response.Error = err.Error()
return c.JSON(response.StatusCode, response)
}
if len(new_buckets) == 0 {
response.Message = "All buckets already exist"
} else {
response.Message = "Buckets successfully created"
}
response.StatusCode = http.StatusOK
return c.JSON(response.StatusCode, response)
}
// HandleV1BucketList affiche les buckets permis par server.documents.buckets, qui existent.
func HandleV1BucketList(c echo.Context) error {
var response models.V1BucketListResponse
var cfg config.Config
if err := viper.Unmarshal(&cfg); err != nil {
response.StatusCode = http.StatusInternalServerError
response.Message = "Error during viper.Unmarshal"
// response.Error = err.Error()
return c.JSON(response.StatusCode, response)
}
mediaClient, err := media.NewMediaClientFromViper()
if err != nil {
response.StatusCode = http.StatusInternalServerError
response.Message = "Error during media.NewMediaClientFromViper()"
// response.Error = err.Error()
return c.JSON(response.StatusCode, response)
}
var buckets = make(map[string]string)
for bucket_name, bucket_display_name := range cfg.Server.Documents.Buckets {
exists, err := mediaClient.MinioClient.BucketExists(context.Background(), bucket_name)
if err != nil {
response.StatusCode = http.StatusInternalServerError
response.Message = "Error during minio#BucketExists"
// response.Error = err.Error()
return c.JSON(response.StatusCode, response)
}
if exists {
buckets[bucket_name] = bucket_display_name
}
}
response.StatusCode = http.StatusOK
response.Message = "Buckets list successful"
response.Data.Buckets = buckets
return c.JSON(response.StatusCode, response)
//return c.JSON(response.StatusCode, response.Data.Buckets)
}
func HandleV1BucketRead(c echo.Context) error {
var response models.V1BucketReadResponse
var cfg config.Config
if err := viper.Unmarshal(&cfg); err != nil {
response.StatusCode = http.StatusInternalServerError
response.Error = err.Error()
return c.JSON(response.StatusCode, response)
}
bucket := c.Param("bucket")
allowed := false
for bucket_allowed := range cfg.Server.Documents.Buckets {
if bucket == bucket_allowed {
allowed = true
}
}
if !allowed {
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return c.JSON(http.StatusNotFound, models.NotFoundResponse())
}
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
mediaClient, err := media.NewMediaClientFromViper()
if err != nil {
response.StatusCode = http.StatusInternalServerError
response.Message = "Error during media.NewMediaClientFromViper()"
response.Error = err.Error()
return c.JSON(response.StatusCode, response)
}
exists, err := mediaClient.MinioClient.BucketExists(ctx, bucket)
if err != nil {
response.StatusCode = http.StatusInternalServerError
response.Message = "Error during minio#BucketExists"
response.Error = err.Error()
return c.JSON(response.StatusCode, response)
}
if !exists {
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return c.JSON(http.StatusNotFound, models.NotFoundResponse())
}
objectCh := mediaClient.MinioClient.ListObjects(ctx, bucket, minio.ListObjectsOptions{})
for object := range objectCh {
if object.Err != nil {
response.StatusCode = http.StatusInternalServerError
response.Message = "Error during minio#ListObjects"
//TODO make sure this is safe
//response.Error = object.Err.Error()
return c.JSON(response.StatusCode, response)
}
response.Data.Keys = append(response.Data.Keys, object.Key)
}
response.StatusCode = http.StatusOK
response.Message = "V1BucketRead ok"
return c.JSON(response.StatusCode, response)
}
// HandleV1DocumentCreate permet d'ajouter un object dans un bucket, par multipart/form-data
func HandleV1DocumentCreate(c echo.Context) error {
var cfg config.Config
if err := viper.Unmarshal(&cfg); err != nil {
return c.JSON(http.StatusInternalServerError, map[string]string{
"error": err.Error(),
})
}
bucket := c.Param("bucket")
form_file, err := c.FormFile("document")
if err != nil {
return c.JSON(http.StatusBadRequest, map[string]interface{}{
"message": "Error during HandleV1DocumentCreate's echo#Context.FormFile",
"error": err,
})
}
allowed := false
for bucket_allowed := range cfg.Server.Documents.Buckets {
if bucket == bucket_allowed {
allowed = true
}
}
if !allowed {
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return c.JSON(http.StatusNotFound, models.NotFoundResponse())
}
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
mediaClient, err := media.NewMediaClientFromViper()
if err != nil {
return c.JSON(http.StatusInternalServerError, map[string]string{
"message": "Error during media.NewMediaClientFromViper()",
"error": err.Error(),
})
}
src, err := form_file.Open()
if err != nil {
return err
}
defer src.Close()
/*
reg, err := regexp.Compile("[^.a-zA-Z0-9_-]+")
if err != nil {
return c.Render(http.StatusInternalServerError, "documentation-html", nil)
}
filename_processed := reg.ReplaceAllString(form_file.Filename, "")
*/
info, err := mediaClient.MinioClient.PutObject(ctx, bucket, form_file.Filename, src, form_file.Size, minio.PutObjectOptions{
ContentType: form_file.Header.Get("Content-Type"),
})
if err != nil {
return c.JSON(http.StatusInternalServerError, map[string]string{
"message": "Error during minio#PutObject",
})
}
return c.JSON(http.StatusOK, map[string]interface{}{
"message": "ok",
"info": map[string]interface{}{
"bucket": info.Bucket,
"key": info.Key,
"size": info.Size,
},
})
}
// HandleV1DocumentRead permet de lire le contenu d'un fichier et protentiellement de le télécharger
func HandleV1DocumentRead(c echo.Context) error {
var cfg config.Config
if err := viper.Unmarshal(&cfg); err != nil {
return c.JSON(http.StatusInternalServerError, map[string]string{
"error": err.Error(),
})
}
bucket := c.Param("bucket")
document := c.Param("document")
allowed := false
for bucket_allowed := range cfg.Server.Documents.Buckets {
if bucket == bucket_allowed {
allowed = true
}
}
if !allowed {
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return c.JSON(http.StatusNotFound, models.NotFoundResponse())
}
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
mediaClient, err := media.NewMediaClientFromViper()
if err != nil {
return c.JSON(http.StatusInternalServerError, map[string]string{
"message": "Error during media.NewMediaClientFromViper()",
"error": err.Error(),
})
}
bucket_exists, err := mediaClient.MinioClient.BucketExists(ctx, bucket)
if err != nil {
return c.JSON(http.StatusInternalServerError, "Error during minio#BucketExists")
}
if !bucket_exists {
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return c.JSON(http.StatusNotFound, models.NotFoundResponse())
}
document_info, err := mediaClient.MinioClient.StatObject(ctx, bucket, document, minio.StatObjectOptions{})
if err != nil {
if err.Error() == "The specified key does not exist." {
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return c.JSON(http.StatusNotFound, models.NotFoundResponse())
}
return c.JSON(http.StatusInternalServerError, map[string]interface{}{
"message": "Error during minio#StatObject",
})
}
_ = document_info
document_object, err := mediaClient.MinioClient.GetObject(ctx, bucket, document, minio.GetObjectOptions{})
if err != nil {
return c.JSON(http.StatusInternalServerError, map[string]string{
"message": "Error during minio#GetObject",
})
}
defer document_object.Close()
return c.Stream(http.StatusOK, document_info.ContentType, document_object)
}
// HandleV1DocumentUpdate permet de mettre à jour certains champs d'un object, comme le Content-Type ou le Filename
func HandleV1DocumentUpdate(c echo.Context) error {
return c.JSON(http.StatusNotImplemented, map[string]string{
"message": "Not Implemented",
})
}
// HandleV1DocumentDelete permet de supprimer un object
func HandleV1DocumentDelete(c echo.Context) error {
var cfg config.Config
if err := viper.Unmarshal(&cfg); err != nil {
return c.JSON(http.StatusInternalServerError, map[string]string{
"error": err.Error(),
})
}
bucket := c.Param("bucket")
document := c.Param("document")
allowed := false
for bucket_allowed := range cfg.Server.Documents.Buckets {
if bucket == bucket_allowed {
allowed = true
}
}
if !allowed {
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return c.JSON(http.StatusNotFound, models.NotFoundResponse())
}
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
mediaClient, err := media.NewMediaClientFromViper()
if err != nil {
return c.JSON(http.StatusInternalServerError, map[string]string{
"message": "Error during media.NewMediaClientFromViper()",
"error": err.Error(),
})
}
bucket_exists, err := mediaClient.MinioClient.BucketExists(ctx, bucket)
if err != nil {
return c.JSON(http.StatusInternalServerError, "Error during minio#BucketExists")
}
if !bucket_exists {
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return c.JSON(http.StatusNotFound, models.NotFoundResponse())
}
document_info, err := mediaClient.MinioClient.StatObject(ctx, bucket, document, minio.StatObjectOptions{})
if err != nil {
if err.Error() == "The specified key does not exist." {
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return c.JSON(http.StatusNotFound, models.NotFoundResponse())
}
return c.JSON(http.StatusInternalServerError, map[string]interface{}{
"message": "Error during minio#StatObject",
})
}
//TODO Add error validation
_ = document_info
err = mediaClient.MinioClient.RemoveObject(ctx, bucket, document, minio.RemoveObjectOptions{})
if err != nil {
return c.JSON(http.StatusInternalServerError, map[string]string{
"message": "Error during minio#RemoveObject",
})
}
return c.JSON(http.StatusOK, map[string]string{
"message": "Document deleted",
})
}