Add the POST /files/_all_docs route

docs/files.md

@@ -372,6 +372,134 @@ Content-Type: application/vnd.api+json
 }
 ```
 
+### POST `/files/_all_docs`
+
+This route allows to fetch several files in one request. It is the same as the
+`_all_docs` request for CouchDB, except the response is in the JSON-API format,
+(with thumbnails and path for the files).
+
+### Request
+
+```http
+POST /files/_all_docs HTTP/1.1
+```
+
+```json
+{
+  "keys": ["e8c1561846c730428180a5f6c6107914", "e8c1561846c730428180a5f6c6109007"]
+}
+```
+
+### Response
+
+```http
+HTTP/1.1 200 OK
+Date: Mon, 27 Sept 2016 12:28:53 GMT
+Content-Length: ...
+Content-Type: application/json
+```
+
+```json
+{
+  "data": [
+    {
+      "type": "io.cozy.files",
+      "id": "e8c1561846c730428180a5f6c6107914",
+      "attributes": {
+        "type": "file",
+        "name": "nicepic1.jpg",
+        "dir_id": "f49b4087cbf946dfc759214394009a6c",
+        "created_at": "2020-02-13T16:35:47.568155477+01:00",
+        "updated_at": "2020-02-13T16:35:47.568155477+01:00",
+        "size": "345385",
+        "md5sum": "12cGYwT+RiNjFxf4f7AmzQ==",
+        "mime": "image/jpeg",
+        "class": "image",
+        "executable": false,
+        "trashed": false,
+        "tags": [],
+        "path": "/Pictures/nicepic1.jpg",
+        "metadata": {
+          "datetime": "2020-02-13T16:35:47.568155477+01:00",
+          "extractor_version": 2,
+          "height": 1080,
+          "width": 1920
+        }
+      },
+      "meta": {
+        "rev": "2-235e715b1d82a93285be1b0bd691b779"
+      },
+      "links": {
+        "self": "/files/e8c1561846c730428180a5f6c6107914",
+        "tiny": "/files/e8c1561846c730428180a5f6c6107914/thumbnails/377327a8e20d6a50/tiny",
+        "small": "/files/e8c1561846c730428180a5f6c6107914/thumbnails/377327a8e20d6a50/small",
+        "medium": "/files/e8c1561846c730428180a5f6c6107914/thumbnails/377327a8e20d6a50/medium",
+        "large": "/files/e8c1561846c730428180a5f6c6107914/thumbnails/377327a8e20d6a50/large"
+      },
+      "relationships": {
+        "parent": {
+          "links": {
+            "related": "/files/f49b4087cbf946dfc759214394009a6c"
+          },
+          "data": {
+            "id": "f49b4087cbf946dfc759214394009a6c",
+            "type": "io.cozy.files"
+          }
+        }
+      }
+    },
+    {
+      "type": "io.cozy.files",
+      "id": "e8c1561846c730428180a5f6c6109007",
+      "attributes": {
+        "type": "file",
+        "name": "nicepic2.jpg",
+        "dir_id": "f49b4087cbf946dfc759214394009a6c",
+        "created_at": "2020-02-13T16:35:47.845049743+01:00",
+        "updated_at": "2020-02-13T16:35:47.845049743+01:00",
+        "size": "323009",
+        "md5sum": "Fla3ucNXuW2Xw/TK8pfsPA==",
+        "mime": "image/jpeg",
+        "class": "image",
+        "executable": false,
+        "trashed": false,
+        "tags": [],
+        "path": "/Pictures/nicepic2.jpg",
+        "metadata": {
+          "datetime": "2020-02-13T16:35:47.845049743+01:00",
+          "extractor_version": 2,
+          "height": 1080,
+          "width": 1920
+        }
+      },
+      "meta": {
+        "rev": "2-4883d6b8ccad32f8fb056af9b7f8b37f"
+      },
+      "links": {
+        "self": "/files/e8c1561846c730428180a5f6c6109007",
+        "tiny": "/files/e8c1561846c730428180a5f6c6109007/thumbnails/58a4aea31b00c99d/tiny",
+        "small": "/files/e8c1561846c730428180a5f6c6109007/thumbnails/58a4aea31b00c99d/small",
+        "medium": "/files/e8c1561846c730428180a5f6c6109007/thumbnails/58a4aea31b00c99d/medium",
+        "large": "/files/e8c1561846c730428180a5f6c6109007/thumbnails/58a4aea31b00c99d/large"
+      },
+      "relationships": {
+        "parent": {
+          "links": {
+            "related": "/files/f49b4087cbf946dfc759214394009a6c"
+          },
+          "data": {
+            "id": "f49b4087cbf946dfc759214394009a6c",
+            "type": "io.cozy.files"
+          }
+        }
+      }
+    }
+  ]
+}
+```
+
+
+
 ### GET `/files/_changes`
 
 This endpoint is similar to the changes feed of CouchDB for io.cozy.files.

web/files/files.go

@@ -1524,6 +1524,43 @@ func DestroyFileHandler(c echo.Context) error {
 	return c.NoContent(204)
 }
 
+// GetAllDocs is the handler for POST /files/_all_docs
+func GetAllDocs(c echo.Context) error {
+	inst := middlewares.GetInstance(c)
+	if err := middlewares.AllowWholeType(c, permission.GET, consts.Files); err != nil {
+		return err
+	}
+	var allDocsReq struct {
+		Keys []string `json:"keys"`
+	}
+	if err := json.NewDecoder(c.Request().Body).Decode(&allDocsReq); err != nil {
+		return jsonapi.Errorf(http.StatusBadRequest, "%s", err)
+	}
+
+	req := &couchdb.AllDocsRequest{Keys: allDocsReq.Keys}
+	var results []vfs.DirOrFileDoc
+	if err := couchdb.GetAllDocs(inst, consts.Files, req, &results); err != nil {
+		return err
+	}
+
+	out := make([]jsonapi.Object, 0)
+	fp := vfs.NewFilePatherWithCache(inst.VFS())
+	for _, result := range results {
+		if result.ID() == consts.TrashDirID {
+			continue
+		}
+		d, f := result.Refine()
+		if d != nil {
+			out = append(out, newDir(d))
+		} else {
+			file := NewFile(f, inst)
+			file.IncludePath(fp)
+			out = append(out, file)
+		}
+	}
+	return jsonapi.DataList(c, http.StatusOK, out, nil)
+}
+
 // FindFilesMango is the route POST /files/_find
 // used to retrieve files and their metadata from a mango query.
 func FindFilesMango(c echo.Context) error {
@@ -1938,6 +1975,7 @@ func Routes(router *echo.Group) {
 	router.POST("/:file-id/versions", CopyVersionHandler)
 	router.DELETE("/versions", ClearOldVersions)
 
+	router.POST("/_all_docs", GetAllDocs)
 	router.POST("/_find", FindFilesMango)
 	router.GET("/_changes", ChangesFeed)
 

web/files/files_test.go

@@ -3305,6 +3305,33 @@ func TestFiles(t *testing.T) {
 		})
 	})
 
+	t.Run("GetAllDocs", func(t *testing.T) {
+		e := testutils.CreateTestClient(t, ts.URL)
+
+		obj := e.POST("/files/_all_docs").
+			WithHeader("Content-Type", "application/json").
+			WithHeader("Authorization", "Bearer "+token).
+			WithBytes([]byte(fmt.Sprintf(`{
+				"keys": ["io.cozy.files.root-dir", "%s"]
+      }`, fileID))).
+			Expect().Status(200).
+			JSON(httpexpect.ContentOpts{MediaType: "application/vnd.api+json"}).
+			Object()
+
+		data := obj.Value("data").Array()
+		data.Length().IsEqual(2)
+
+		elem := data.Value(0).Object()
+		attrs := elem.Value("attributes").Object()
+		attrs.HasValue("path", "/")
+
+		elem = data.Value(1).Object()
+		attrs = elem.Value("attributes").Object()
+		attrs.Value("path").String().NotEmpty()
+		links := elem.Value("links").Object()
+		links.Value("tiny").String().NotEmpty()
+	})
+
 	t.Run("Find", func(t *testing.T) {
 		e := testutils.CreateTestClient(t, ts.URL)