Add user API endpoints and metrics endpoint

internal/web/api/auth_users.go

@@ -0,0 +1,154 @@
+package api
+
+import (
+	"encoding/json"
+	"errors"
+	"github.com/Unkn0wnCat/matrix-veles/internal/db"
+	"github.com/go-chi/chi/v5"
+	"go.mongodb.org/mongo-driver/bson/primitive"
+	"go.mongodb.org/mongo-driver/mongo"
+	"net/http"
+	"net/url"
+	"strconv"
+)
+
+func apiHandleAuthUsersList(res http.ResponseWriter, req *http.Request) {
+	requestUri, err := url.ParseRequestURI(req.RequestURI)
+	if err != nil {
+		writeJSONError(res, http.StatusBadRequest, errors.New("unable to parse uri"))
+		return
+	}
+
+	first := int64(50)
+	var cursor *primitive.ObjectID
+
+	if requestUri.Query().Has("first") {
+		first2, err := strconv.Atoi(requestUri.Query().Get("first"))
+		if err != nil {
+			writeJSONError(res, http.StatusBadRequest, errors.New("malformed query"))
+			return
+		}
+		first = int64(first2)
+	}
+
+	if requestUri.Query().Has("cursor") {
+		cursor2, err := primitive.ObjectIDFromHex(requestUri.Query().Get("cursor"))
+		if err != nil {
+			writeJSONError(res, http.StatusBadRequest, errors.New("malformed query"))
+			return
+		}
+		cursor = &cursor2
+	}
+
+	entries, err := db.GetUsers(first, cursor)
+	if err != nil {
+		if !errors.Is(err, mongo.ErrNoDocuments) {
+			// TODO: LOG THIS ERROR
+			writeJSONError(res, http.StatusInternalServerError, errors.New("database error"))
+			return
+		}
+		res.Header().Set("Content-Type", "application/json")
+		res.WriteHeader(http.StatusOK)
+		res.Write([]byte("[]"))
+		return
+	}
+
+	encoded, err := json.Marshal(entries)
+	if err != nil {
+		// TODO: LOG THIS ERROR
+		writeJSONError(res, http.StatusInternalServerError, errors.New("could not marshal data"))
+		return
+	}
+
+	res.Header().Set("Content-Type", "application/json")
+	res.WriteHeader(http.StatusOK)
+	res.Write(encoded)
+}
+
+func apiHandleAuthUser(res http.ResponseWriter, req *http.Request) {
+	requestedId := chi.URLParam(req, "id")
+	objectId, err := primitive.ObjectIDFromHex(requestedId)
+	if err != nil {
+		writeJSONError(res, http.StatusNotFound, errors.New("malformed id"))
+		return
+	}
+
+	entry, err := db.GetUserByID(objectId)
+	if err != nil {
+		if errors.Is(err, mongo.ErrNoDocuments) {
+			writeJSONError(res, http.StatusNotFound, errors.New("not found"))
+			return
+		}
+		// TODO: LOG THIS ERROR
+		writeJSONError(res, http.StatusInternalServerError, errors.New("database error"))
+		return
+	}
+
+	encoded, err := json.Marshal(entry)
+	if err != nil {
+		// TODO: LOG THIS ERROR
+		writeJSONError(res, http.StatusInternalServerError, errors.New("could not marshal data"))
+		return
+	}
+
+	res.Header().Set("Content-Type", "application/json")
+	res.WriteHeader(http.StatusOK)
+	res.Write(encoded)
+}
+
+func apiHandleAuthUserSelf(res http.ResponseWriter, req *http.Request) {
+	claims := getClaims(req)
+	objectId, err := primitive.ObjectIDFromHex(claims.Subject)
+	if err != nil {
+		writeJSONError(res, http.StatusNotFound, errors.New("malformed id"))
+		return
+	}
+
+	entry, err := db.GetUserByID(objectId)
+	if err != nil {
+		if errors.Is(err, mongo.ErrNoDocuments) {
+			writeJSONError(res, http.StatusNotFound, errors.New("not found"))
+			return
+		}
+		// TODO: LOG THIS ERROR
+		writeJSONError(res, http.StatusInternalServerError, errors.New("database error"))
+		return
+	}
+
+	encoded, err := json.Marshal(entry)
+	if err != nil {
+		// TODO: LOG THIS ERROR
+		writeJSONError(res, http.StatusInternalServerError, errors.New("could not marshal data"))
+		return
+	}
+
+	res.Header().Set("Content-Type", "application/json")
+	res.WriteHeader(http.StatusOK)
+	res.Write(encoded)
+}
+
+func apiHandleAuthUserByName(res http.ResponseWriter, req *http.Request) {
+	requestedName := chi.URLParam(req, "name")
+
+	entry, err := db.GetUserByUsername(requestedName)
+	if err != nil {
+		if errors.Is(err, mongo.ErrNoDocuments) {
+			writeJSONError(res, http.StatusNotFound, errors.New("not found"))
+			return
+		}
+		// TODO: LOG THIS ERROR
+		writeJSONError(res, http.StatusInternalServerError, errors.New("database error"))
+		return
+	}
+
+	encoded, err := json.Marshal(entry)
+	if err != nil {
+		// TODO: LOG THIS ERROR
+		writeJSONError(res, http.StatusInternalServerError, errors.New("could not marshal data"))
+		return
+	}
+
+	res.Header().Set("Content-Type", "application/json")
+	res.WriteHeader(http.StatusOK)
+	res.Write(encoded)
+}