Reorganize the webUI and API code

Included in the changes:
- create a new /api root package to hold all API code, migrate /graphql in there
- git API handlers all use the cache instead of the repo directly
- git API handlers are now tested
- git API handlers now require a "repo" mux parameter
- lots of untangling of API/handlers/middleware
- less code in commands/webui.go

1 files changed, 104 insertions, 0 deletions

diff --git a/api/http/git_file_upload_handler.go b/api/http/git_file_upload_handler.go
new file mode 100644
index 00000000..1702b8b1
--- /dev/null
+++ b/api/http/git_file_upload_handler.go
@@ -0,0 +1,104 @@
+package http
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+
+	"github.com/gorilla/mux"
+
+	"github.com/MichaelMure/git-bug/api/auth"
+	"github.com/MichaelMure/git-bug/cache"
+)
+
+// implement a http.Handler that will accept and store content into git blob.
+//
+// Expected gorilla/mux parameters:
+//   - "repo" : the ref of the repo or "" for the default one
+type gitUploadFileHandler struct {
+	mrc *cache.MultiRepoCache
+}
+
+func NewGitUploadFileHandler(mrc *cache.MultiRepoCache) http.Handler {
+	return &gitUploadFileHandler{mrc: mrc}
+}
+
+func (gufh *gitUploadFileHandler) ServeHTTP(rw http.ResponseWriter, r *http.Request) {
+	var repo *cache.RepoCache
+	var err error
+
+	repoVar := mux.Vars(r)["repo"]
+	switch repoVar {
+	case "":
+		repo, err = gufh.mrc.DefaultRepo()
+	default:
+		repo, err = gufh.mrc.ResolveRepo(repoVar)
+	}
+
+	if err != nil {
+		http.Error(rw, "invalid repo reference", http.StatusBadRequest)
+		return
+	}
+
+	_, err = auth.UserFromCtx(r.Context(), repo)
+	if err == auth.ErrNotAuthenticated {
+		http.Error(rw, "read-only mode or not logged in", http.StatusForbidden)
+		return
+	} else if err != nil {
+		http.Error(rw, fmt.Sprintf("loading identity: %v", err), http.StatusInternalServerError)
+		return
+	}
+
+	// 100MB (github limit)
+	var maxUploadSize int64 = 100 * 1000 * 1000
+	r.Body = http.MaxBytesReader(rw, r.Body, maxUploadSize)
+	if err := r.ParseMultipartForm(maxUploadSize); err != nil {
+		http.Error(rw, "file too big (100MB max)", http.StatusBadRequest)
+		return
+	}
+
+	file, _, err := r.FormFile("uploadfile")
+	if err != nil {
+		http.Error(rw, "invalid file", http.StatusBadRequest)
+		return
+	}
+	defer file.Close()
+	fileBytes, err := ioutil.ReadAll(file)
+	if err != nil {
+		http.Error(rw, "invalid file", http.StatusBadRequest)
+		return
+	}
+
+	filetype := http.DetectContentType(fileBytes)
+	if filetype != "image/jpeg" && filetype != "image/jpg" &&
+		filetype != "image/gif" && filetype != "image/png" {
+		http.Error(rw, "invalid file type", http.StatusBadRequest)
+		return
+	}
+
+	hash, err := repo.StoreData(fileBytes)
+	if err != nil {
+		http.Error(rw, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	type response struct {
+		Hash string `json:"hash"`
+	}
+
+	resp := response{Hash: string(hash)}
+
+	js, err := json.Marshal(resp)
+	if err != nil {
+		http.Error(rw, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	rw.Header().Set("Content-Type", "application/json")
+	_, err = rw.Write(js)
+	if err != nil {
+		http.Error(rw, err.Error(), http.StatusInternalServerError)
+		return
+	}
+}