feat: add new features such as database watchdog

internal/api/routes_file.go

@@ -0,0 +1,79 @@
+package api
+
+import (
+	"eden-server/internal/crypto"
+	"eden-server/internal/database"
+	"eden-server/internal/runtime"
+	"log"
+	"log/slog"
+	"net/http"
+	"path/filepath"
+
+	"github.com/gin-gonic/gin"
+	"github.com/google/uuid"
+	"gorm.io/gorm"
+)
+
+func spawnFileRoutes(file *gin.RouterGroup, env runtime.Environment, db *gorm.DB) {
+	// /file/<file-name>
+	file.GET("/:filename", func(c *gin.Context) {
+		f := c.Param("filename")
+		p := filepath.Join(env.DataDirectory, "content", f)
+
+		c.File(p)
+	})
+
+	// define the upload route
+	// /file/upload
+	file.POST("/upload", func(c *gin.Context) {
+		f, err := c.FormFile("file")
+		if err != nil {
+			slog.Error("failed to get file details from request", "error", err)
+			c.JSON(http.StatusBadRequest, RespObj{
+				Msg: "a file is required",
+			})
+			return
+		}
+
+		e := filepath.Ext(f.Filename)
+		m := categorizeFilemode(e)
+		if m == database.ModeUnspecified {
+			slog.Warn("discarding file since its filetype is unsupported")
+			c.JSON(http.StatusUnsupportedMediaType, RespObj{
+				Msg: "unsupported filetype",
+			})
+			return
+		}
+
+		safeName := uuid.New().String()[:8] + "_" + string(m) + e
+		destPath := filepath.Join(env.DataDirectory, "content", safeName)
+
+		if err := c.SaveUploadedFile(f, destPath); err != nil {
+			slog.Error("failed to receive the file over http:", "error", err)
+			c.JSON(http.StatusInternalServerError, RespObj{
+				Msg: ieMes,
+			})
+			return
+		}
+
+		cSum, err := crypto.CalculateHash(destPath)
+		if err != nil {
+			slog.Error("failed to calculate hash of file at given path", "error", err)
+			c.JSON(http.StatusInternalServerError, RespObj{
+				Msg: ieMes,
+			})
+		}
+		log.Println(cSum)
+
+		fData := database.File{
+			Mode:      m,
+			GivenName: f.Filename,
+			Filepath:  destPath,
+			Checksum:  cSum,
+		}
+		database.RegisterFile(db, fData)
+		c.JSON(http.StatusCreated, RespObj{
+			Msg: "file has succesfully been uploaded",
+		})
+	})
+}