Uploaded Media File Delete Update

README.md

@@ -71,4 +71,14 @@ Renames a specific simulation. Automatically updates the database and physically
 Uploads a new media or data resource file directly into a completed simulation run. Supports both images (e.g., PNGs) and heavy video files (e.g., AVIs) out of the box with an initial multi-part allocation pool mapping of 500 MB.
 - **Request Data:** `multipart/form-data` packet using the `file` keyword carrying the binary data blocks.
 - **Behavior:** The Go service validates the simulation ID exists, dynamically builds the memory pool, opens a stream writer caching the binary blob into the `../results/simulation_X/filename.ext` directory path, and records the resource in the primary SQLite instance.
-- **Response:** JSON object `{"status": "success", "filename": "example.png"}`
+- **Response:** JSON object `{"status": "success", "filename": "example.png"}`
+
+### `DELETE /api/simulations/:id`
+Permanently deletes a complete simulation from the platform.
+- **Behavior:** Deletes the record from the SQLite database along with any bound resource hooks. It subsequently initiates a full removal of the linked `../results/:name` directory natively off the OS to completely recover physical disk space.
+- **Response:** JSON object `{"status": "success"}`
+
+### `DELETE /api/simulations/:id/resources/:filename`
+Deletes a specific user-uploaded media asset or log file dynamically out of a simulation without dropping the core simulation entity itself.
+- **Behavior:** Detaches the file association string from SQLite and forces an OS-level file drop directly onto the specific asset file stored within the simulation's results directory.
+- **Response:** JSON object `{"status": "success"}`

server/api.go

@@ -1,403 +0,0 @@
-package main
-
-import (
-	"database/sql"
-	"encoding/json"
-	"fmt"
-	"io"
-	"log"
-	"net/http"
-	"os"
-	"path/filepath"
-	"strings"
-)
-
-func createSimulation(w http.ResponseWriter, r *http.Request) {
-	w.Header().Set("Access-Control-Allow-Origin", "*")
-	if r.Method == "OPTIONS" {
-		w.Header().Set("Access-Control-Allow-Methods", "POST")
-		w.WriteHeader(http.StatusOK)
-		return
-	}
-
-	if r.Method != "POST" {
-		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
-		return
-	}
-
-	bodyBytes, err := io.ReadAll(r.Body)
-	if err != nil {
-		http.Error(w, "Failed to read request body", http.StatusBadRequest)
-		return
-	}
-	defer r.Body.Close()
-	configStr := string(bodyBytes)
-
-	if configStr == "" {
-		http.Error(w, "Config cannot be empty", http.StatusBadRequest)
-		return
-	}
-
-	// Pattern validation: must contain a search pattern (spiral, lawnmower, or levy)
-	hasPattern := false
-	
-	// Fast regex check or parse to detect patterns
-	var jsonParsed map[string]interface{}
-	err = json.Unmarshal(bodyBytes, &jsonParsed)
-	if err != nil {
-		http.Error(w, "Invalid configuration format: must be valid JSON", http.StatusBadRequest)
-		return
-	}
-
-	// Valid JSON, traverse and look for pattern
-	for k, v := range jsonParsed {
-		if k == "search.yaml" || k == "search" {
-			if searchMap, ok := v.(map[string]interface{}); ok {
-				if _, ok := searchMap["spiral"]; ok { hasPattern = true }
-				if _, ok := searchMap["lawnmower"]; ok { hasPattern = true }
-				if _, ok := searchMap["levy"]; ok { hasPattern = true }
-			}
-		}
-	}
-
-	if !hasPattern {
-		http.Error(w, "Simulation configuration must include a search pattern (spiral, lawnmower, or levy)", http.StatusBadRequest)
-		return
-	}
-
-	// Check if this config already exists
-	var existingID int
-	var existingName string
-	err = db.QueryRow("SELECT id, name FROM simulations WHERE config = ?", configStr).Scan(&existingID, &existingName)
-	if err == nil {
-		// Found exact config, return the existing run info
-		w.Header().Set("Content-Type", "application/json")
-		json.NewEncoder(w).Encode(map[string]interface{}{
-			"id":   existingID,
-			"name": existingName,
-		})
-		return
-	}
-
-	var count int
-	db.QueryRow("SELECT COUNT(*) FROM simulations").Scan(&count)
-	newName := fmt.Sprintf("simulation_%d", count+1)
-
-	// ensure name doesn't exist
-	for {
-		var temp int
-		err := db.QueryRow("SELECT id FROM simulations WHERE name = ?", newName).Scan(&temp)
-		if err == sql.ErrNoRows {
-			break
-		}
-		count++
-		newName = fmt.Sprintf("simulation_%d", count+1)
-	}
-
-	res, err := db.Exec("INSERT INTO simulations(name, config) VALUES(?, ?)", newName, configStr)
-	if err != nil {
-		log.Println("Insert simulation error:", err)
-		http.Error(w, "Failed to create", http.StatusInternalServerError)
-		return
-	}
-	newID, _ := res.LastInsertId()
-
-	// Ensure the directory exists
-	resultsDir := filepath.Join("../results", newName)
-	os.MkdirAll(resultsDir, 0755)
-
-	w.Header().Set("Content-Type", "application/json")
-	json.NewEncoder(w).Encode(map[string]interface{}{
-		"id":   newID,
-		"name": newName,
-	})
-}
-
-func getSimulations(w http.ResponseWriter, r *http.Request) {
-	w.Header().Set("Access-Control-Allow-Origin", "*")
-	if r.Method == "OPTIONS" {
-		w.Header().Set("Access-Control-Allow-Methods", "GET")
-		w.WriteHeader(http.StatusOK)
-		return
-	}
-
-	rows, err := db.Query("SELECT id, name, config, created_at, search_time, total_time FROM simulations")
-	if err != nil {
-		http.Error(w, err.Error(), http.StatusInternalServerError)
-		return
-	}
-	defer rows.Close()
-
-	var sims []Simulation
-	for rows.Next() {
-		var s Simulation
-		err = rows.Scan(&s.ID, &s.Name, &s.Config, &s.CreatedAt, &s.SearchTime, &s.TotalTime)
-		if err != nil {
-			log.Println("Row scan error:", err)
-			continue
-		}
-		sims = append(sims, s)
-	}
-
-	if sims == nil {
-		sims = []Simulation{}
-	}
-
-	w.Header().Set("Content-Type", "application/json")
-	json.NewEncoder(w).Encode(sims)
-}
-
-func getSimulationDetails(w http.ResponseWriter, r *http.Request) {
-	w.Header().Set("Access-Control-Allow-Origin", "*")
-	if r.Method == "OPTIONS" {
-		w.Header().Set("Access-Control-Allow-Methods", "GET, PUT, POST, DELETE, OPTIONS")
-		w.WriteHeader(http.StatusOK)
-		return
-	}
-
-	pathParts := strings.Split(strings.Trim(r.URL.Path[len("/api/simulations/"):], "/"), "/")
-	idStr := pathParts[0]
-
-	if idStr == "" || idStr == "create" {
-		http.Error(w, "Not found", http.StatusNotFound)
-		return
-	}
-
-	if r.Method == "PUT" && len(pathParts) > 1 && pathParts[1] == "time" {
-		updateSimulationTime(w, r, idStr)
-		return
-	}
-
-	if r.Method == "POST" && len(pathParts) > 1 && pathParts[1] == "upload" {
-		uploadSimulationResource(w, r, idStr)
-		return
-	}
-
-	if r.Method == "PUT" && len(pathParts) > 1 && pathParts[1] == "rename" {
-		renameSimulation(w, r, idStr)
-		return
-	}
-
-	if r.Method == "DELETE" && len(pathParts) == 1 {
-		deleteSimulation(w, r, idStr)
-		return
-	}
-
-	if r.Method != "GET" {
-		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
-		return
-	}
-
-	var s Simulation
-	err := db.QueryRow("SELECT id, name, config, created_at, search_time, total_time FROM simulations WHERE id = ?", idStr).Scan(&s.ID, &s.Name, &s.Config, &s.CreatedAt, &s.SearchTime, &s.TotalTime)
-	if err != nil {
-		if err == sql.ErrNoRows {
-			http.Error(w, "Simulation not found", http.StatusNotFound)
-		} else {
-			http.Error(w, err.Error(), http.StatusInternalServerError)
-		}
-		return
-	}
-
-	rows, err := db.Query("SELECT filename FROM resources WHERE simulation_id = ?", s.ID)
-	if err == nil {
-		defer rows.Close()
-		for rows.Next() {
-			var fname string
-			if err := rows.Scan(&fname); err == nil {
-				s.Resources = append(s.Resources, fname)
-				if stat, err := os.Stat(filepath.Join("../results", s.Name, fname)); err == nil {
-					s.TotalSizeBytes += stat.Size()
-				}
-			}
-		}
-	}
-	if s.Resources == nil {
-		s.Resources = []string{}
-	}
-
-	w.Header().Set("Content-Type", "application/json")
-	json.NewEncoder(w).Encode(s)
-}
-
-func updateSimulationTime(w http.ResponseWriter, r *http.Request, idStr string) {
-	var reqBody struct {
-		SearchTime *float64 `json:"search_time"`
-		TotalTime  *float64 `json:"total_time"`
-	}
-
-	err := json.NewDecoder(r.Body).Decode(&reqBody)
-	if err != nil {
-		http.Error(w, "Invalid request body", http.StatusBadRequest)
-		return
-	}
-	defer r.Body.Close()
-
-	if reqBody.SearchTime == nil || reqBody.TotalTime == nil {
-		http.Error(w, "Missing search_time or total_time", http.StatusBadRequest)
-		return
-	}
-
-	_, err = db.Exec("UPDATE simulations SET search_time = ?, total_time = ? WHERE id = ?", *reqBody.SearchTime, *reqBody.TotalTime, idStr)
-	if err != nil {
-		log.Println("Update simulation error:", err)
-		http.Error(w, "Failed to update", http.StatusInternalServerError)
-		return
-	}
-
-	w.Header().Set("Content-Type", "application/json")
-	json.NewEncoder(w).Encode(map[string]string{"status": "success"})
-}
-
-func deleteSimulation(w http.ResponseWriter, r *http.Request, idStr string) {
-	var name string
-	err := db.QueryRow("SELECT name FROM simulations WHERE id = ?", idStr).Scan(&name)
-	if err != nil {
-		if err == sql.ErrNoRows {
-			http.Error(w, "Simulation not found", http.StatusNotFound)
-		} else {
-			http.Error(w, err.Error(), http.StatusInternalServerError)
-		}
-		return
-	}
-
-	// Attempt dropping resource map hooks first
-	_, err = db.Exec("DELETE FROM resources WHERE simulation_id = ?", idStr)
-	if err != nil {
-		log.Println("Warning: Error deleting resources map from DB:", err)
-	}
-	
-	_, err = db.Exec("DELETE FROM simulations WHERE id = ?", idStr)
-	if err != nil {
-		log.Println("Error deleting simulation from DB:", err)
-		http.Error(w, "Failed to delete from database", http.StatusInternalServerError)
-		return
-	}
-
-	// Physically destroy data payload mapped onto it 
-	dirPath := filepath.Join("../results", name)
-	if _, statErr := os.Stat(dirPath); statErr == nil {
-		err = os.RemoveAll(dirPath)
-		if err != nil {
-			log.Println("Warning: Failed fully deleting physical directory items:", err)
-		}
-	}
-
-	w.Header().Set("Content-Type", "application/json")
-	json.NewEncoder(w).Encode(map[string]string{"status": "success"})
-}
-
-func renameSimulation(w http.ResponseWriter, r *http.Request, idStr string) {
-	var reqBody struct {
-		Name string `json:"name"`
-	}
-
-	err := json.NewDecoder(r.Body).Decode(&reqBody)
-	if err != nil || strings.TrimSpace(reqBody.Name) == "" {
-		http.Error(w, "Invalid request body or missing name", http.StatusBadRequest)
-		return
-	}
-	defer r.Body.Close()
-
-	newName := strings.TrimSpace(reqBody.Name)
-
-	var oldName string
-	err = db.QueryRow("SELECT name FROM simulations WHERE id = ?", idStr).Scan(&oldName)
-	if err != nil {
-		http.Error(w, "Simulation not found", http.StatusNotFound)
-		return
-	}
-
-	// Make sure the new name doesn't already exist
-	var tempID int
-	err = db.QueryRow("SELECT id FROM simulations WHERE name = ?", newName).Scan(&tempID)
-	if err == nil {
-		http.Error(w, "A simulation with that name already exists", http.StatusConflict)
-		return
-	}
-
-	// Rename the physical storage folder to maintain link parity
-	oldDirPath := filepath.Join("../results", oldName)
-	newDirPath := filepath.Join("../results", newName)
-	if _, statErr := os.Stat(oldDirPath); statErr == nil {
-		err = os.Rename(oldDirPath, newDirPath)
-		if err != nil {
-			log.Println("Error renaming directory:", err)
-			http.Error(w, "Failed to rename results directory", http.StatusInternalServerError)
-			return
-		}
-	} else {
-		// Just ensure target dir exists
-		os.MkdirAll(newDirPath, 0755)
-	}
-
-	_, err = db.Exec("UPDATE simulations SET name = ? WHERE id = ?", newName, idStr)
-	if err != nil {
-		// Attempt revert if DB dies halfway 
-		os.Rename(newDirPath, oldDirPath)
-		log.Println("Update simulation name error:", err)
-		http.Error(w, "Failed to update database", http.StatusInternalServerError)
-		return
-	}
-
-	w.Header().Set("Content-Type", "application/json")
-	json.NewEncoder(w).Encode(map[string]string{"status": "success", "new_name": newName})
-}
-
-func uploadSimulationResource(w http.ResponseWriter, r *http.Request, idStr string) {
-	var simName string
-	err := db.QueryRow("SELECT name FROM simulations WHERE id = ?", idStr).Scan(&simName)
-	if err != nil {
-		if err == sql.ErrNoRows {
-			http.Error(w, "Simulation not found", http.StatusNotFound)
-		} else {
-			http.Error(w, err.Error(), http.StatusInternalServerError)
-		}
-		return
-	}
-
-	err = r.ParseMultipartForm(500 << 20) // 500 MB max memory/file bounds
-	if err != nil {
-		http.Error(w, "Error parsing form: "+err.Error(), http.StatusBadRequest)
-		return
-	}
-
-	file, handler, err := r.FormFile("file")
-	if err != nil {
-		http.Error(w, "Error retrieving the file", http.StatusBadRequest)
-		return
-	}
-	defer file.Close()
-
-	destPath := filepath.Join("../results", simName, handler.Filename)
-	dst, err := os.Create(destPath)
-	if err != nil {
-		http.Error(w, "Error creating destination file: "+err.Error(), http.StatusInternalServerError)
-		return
-	}
-	defer dst.Close()
-
-	_, err = io.Copy(dst, file)
-	if err != nil {
-		http.Error(w, "Error saving file: "+err.Error(), http.StatusInternalServerError)
-		return
-	}
-
-	// Route through faststart transcoder if it happens to be an .avi
-	finalFilename := transcodeIfNeeded(filepath.Join("../results", simName), handler.Filename)
-
-	var resID int
-	err = db.QueryRow("SELECT id FROM resources WHERE simulation_id = ? AND filename = ?", idStr, finalFilename).Scan(&resID)
-	if err == sql.ErrNoRows {
-		_, err = db.Exec("INSERT INTO resources(simulation_id, filename) VALUES(?, ?)", idStr, finalFilename)
-		if err != nil {
-			log.Println("Error inserting uploaded resource into db:", err)
-		}
-	}
-
-	w.Header().Set("Content-Type", "application/json")
-	json.NewEncoder(w).Encode(map[string]string{
-		"status":   "success",
-		"filename": finalFilename,
-	})
-}

server/db.go

@@ -6,21 +6,11 @@ import (
 	"os"
 	"path/filepath"
 	"strings"
+	"sim-link-server/routes"
 
 	_ "github.com/mattn/go-sqlite3"
 )
 
-type Simulation struct {
-	ID        int      `json:"id"`
-	Name      string   `json:"name"`
-	Resources []string `json:"resources"`
-	CreatedAt  string   `json:"created_at"`
-	Config     *string  `json:"config"`
-	SearchTime *float64 `json:"search_time"`
-	TotalTime  *float64 `json:"total_time"`
-	TotalSizeBytes int64 `json:"total_size_bytes"`
-}
-
 var db *sql.DB
 
 func initDBConnection() {
@@ -41,9 +31,9 @@ func initDBConnection() {
 		log.Fatal(err)
 	}
 
-	db.Exec("ALTER TABLE simulations ADD COLUMN config TEXT") // Ignore error if exists
+	db.Exec("ALTER TABLE simulations ADD COLUMN config TEXT")
-	db.Exec("ALTER TABLE simulations ADD COLUMN search_time REAL") // Ignore error if exists
+	db.Exec("ALTER TABLE simulations ADD COLUMN search_time REAL")
-	db.Exec("ALTER TABLE simulations ADD COLUMN total_time REAL") // Ignore error if exists
+	db.Exec("ALTER TABLE simulations ADD COLUMN total_time REAL")
 
 	createResourcesTableSQL := `CREATE TABLE IF NOT EXISTS resources (
 		"id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
@@ -78,17 +68,15 @@ func syncResults() {
 			// Read subfiles
 			subFiles, err := os.ReadDir(filepath.Join(resultsDir, simName))
 			if err == nil {
-				// Clear old resources for this simulation
 				db.Exec("DELETE FROM resources WHERE simulation_id = ?", simID)
 
-				// Check for already inserted to avoid dupes if both exist
 				seen := make(map[string]bool)
 
 				for _, sf := range subFiles {
 					if !sf.IsDir() {
 						finalName := sf.Name()
 						if strings.ToLower(filepath.Ext(finalName)) == ".avi" {
-							finalName = transcodeIfNeeded(filepath.Join(resultsDir, simName), finalName)
+							finalName = routes.TranscodeIfNeeded(filepath.Join(resultsDir, simName), finalName)
 						}
 						
 						if !seen[finalName] {

server/main.go

@@ -7,27 +7,34 @@ import (
 	"os"
 	"path/filepath"
 	"strings"
+	"sim-link-server/routes"
 
 	_ "github.com/mattn/go-sqlite3"
 )
 
+func loggingMiddleware(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if strings.HasPrefix(r.URL.Path, "/api/") {
+			log.Printf("[%s] %s %s", r.RemoteAddr, r.Method, r.URL.Path)
+		}
+		next.ServeHTTP(w, r)
+	})
+}
+
 func main() {
 	initDBConnection()
 	defer db.Close()
 
 	syncResults()
 
-	// Handle API routes
+	rt := routes.NewRouter(db)
-	http.HandleFunc("/api/simulations", getSimulations)
+	rt.Register(http.DefaultServeMux)
-	http.HandleFunc("/api/simulations/create", createSimulation)
+
-	http.HandleFunc("/api/simulations/", getSimulationDetails)
 
-	// Serve the static files from results directory
 	resultsDir := "../results"
 	fsResults := http.FileServer(http.Dir(resultsDir))
 	http.Handle("/results/", http.StripPrefix("/results/", fsResults))
 
-	// Serve the static frontend with SPA fallback
 	frontendDir := "../build"
 	fsFrontend := http.FileServer(http.Dir(frontendDir))
 	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
@@ -40,18 +47,12 @@ func main() {
 		fsFrontend.ServeHTTP(w, r)
 	})
 
-	fmt.Println("Server listening on port 5173")
+	port := os.Getenv("PORT")
+	if port == "" {
+		port = "8080"
+	}
 
-	// Wrap the default ServeMux with our logging middleware
+	fmt.Println("Server listening on port", port)
 	loggedMux := loggingMiddleware(http.DefaultServeMux)
-	log.Fatal(http.ListenAndServe("0.0.0.0:5173", loggedMux))
+	log.Fatal(http.ListenAndServe("0.0.0.0:"+port, loggedMux))
-}
-
-func loggingMiddleware(next http.Handler) http.Handler {
-	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		if strings.HasPrefix(r.URL.Path, "/api/") {
-			log.Printf("[%s] %s %s", r.RemoteAddr, r.Method, r.URL.Path)
-		}
-		next.ServeHTTP(w, r)
-	})
 }

server/routes/models.go

@@ -0,0 +1,12 @@
+package routes
+
+type Simulation struct {
+	ID             int      `json:"id"`
+	Name           string   `json:"name"`
+	Resources      []string `json:"resources"`
+	CreatedAt      string   `json:"created_at"`
+	Config         *string  `json:"config"`
+	SearchTime     *float64 `json:"search_time"`
+	TotalTime      *float64 `json:"total_time"`
+	TotalSizeBytes int64    `json:"total_size_bytes"`
+}

server/routes/resources.go

@@ -0,0 +1,103 @@
+package routes
+
+import (
+	"database/sql"
+	"encoding/json"
+	"io"
+	"log"
+	"net/http"
+	"os"
+	"path/filepath"
+)
+
+func (rt *Router) UploadSimulationResource(w http.ResponseWriter, r *http.Request, idStr string) {
+	w.Header().Set("Access-Control-Allow-Origin", "*")
+
+	var simName string
+	err := rt.DB.QueryRow("SELECT name FROM simulations WHERE id = ?", idStr).Scan(&simName)
+	if err != nil {
+		if err == sql.ErrNoRows {
+			http.Error(w, "Simulation not found", http.StatusNotFound)
+		} else {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+		}
+		return
+	}
+
+	err = r.ParseMultipartForm(500 << 20) // 500 MB max memory/file bounds
+	if err != nil {
+		http.Error(w, "Error parsing form: "+err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	file, handler, err := r.FormFile("file")
+	if err != nil {
+		http.Error(w, "Error retrieving the file", http.StatusBadRequest)
+		return
+	}
+	defer file.Close()
+
+	destPath := filepath.Join("../results", simName, handler.Filename)
+	dst, err := os.Create(destPath)
+	if err != nil {
+		http.Error(w, "Error creating destination file: "+err.Error(), http.StatusInternalServerError)
+		return
+	}
+	defer dst.Close()
+
+	_, err = io.Copy(dst, file)
+	if err != nil {
+		http.Error(w, "Error saving file: "+err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	finalFilename := TranscodeIfNeeded(filepath.Join("../results", simName), handler.Filename)
+
+	var resID int
+	err = rt.DB.QueryRow("SELECT id FROM resources WHERE simulation_id = ? AND filename = ?", idStr, finalFilename).Scan(&resID)
+	if err == sql.ErrNoRows {
+		_, err = rt.DB.Exec("INSERT INTO resources(simulation_id, filename) VALUES(?, ?)", idStr, finalFilename)
+		if err != nil {
+			log.Println("Error inserting uploaded resource into db:", err)
+		}
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	json.NewEncoder(w).Encode(map[string]string{
+		"status":   "success",
+		"filename": finalFilename,
+	})
+}
+
+func (rt *Router) DeleteSimulationResource(w http.ResponseWriter, r *http.Request, idStr string, fileName string) {
+	w.Header().Set("Access-Control-Allow-Origin", "*")
+
+	var simName string
+	err := rt.DB.QueryRow("SELECT name FROM simulations WHERE id = ?", idStr).Scan(&simName)
+	if err != nil {
+		if err == sql.ErrNoRows {
+			http.Error(w, "Simulation not found", http.StatusNotFound)
+		} else {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+		}
+		return
+	}
+
+	_, err = rt.DB.Exec("DELETE FROM resources WHERE simulation_id = ? AND filename = ?", idStr, fileName)
+	if err != nil {
+		log.Println("Error deleting resource from DB:", err)
+		http.Error(w, "Failed to delete from database", http.StatusInternalServerError)
+		return
+	}
+
+	filePath := filepath.Join("../results", simName, fileName)
+	if _, statErr := os.Stat(filePath); statErr == nil {
+		err = os.Remove(filePath)
+		if err != nil {
+			log.Println("Warning: Failed deleting physical file:", err)
+		}
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	json.NewEncoder(w).Encode(map[string]string{"status": "success"})
+}

server/routes/router.go

@@ -0,0 +1,93 @@
+package routes
+
+import (
+	"database/sql"
+	"net/http"
+	"strings"
+	"net/url"
+)
+
+type Router struct {
+	DB *sql.DB
+}
+
+func NewRouter(db *sql.DB) *Router {
+	return &Router{DB: db}
+}
+
+func (rt *Router) Register(mux *http.ServeMux) {
+	mux.HandleFunc("/api/simulations", rt.handleSimulationsBase)
+	mux.HandleFunc("/api/simulations/", rt.handleSimulationsPath)
+}
+
+func (rt *Router) handleSimulationsBase(w http.ResponseWriter, r *http.Request) {
+	if r.Method == "OPTIONS" {
+		rt.OptionsHandler(w, r)
+		return
+	}
+	if r.Method == "GET" {
+		rt.GetSimulations(w, r)
+	} else {
+		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+	}
+}
+
+func (rt *Router) handleSimulationsPath(w http.ResponseWriter, r *http.Request) {
+	if r.Method == "OPTIONS" {
+		rt.OptionsHandler(w, r)
+		return
+	}
+
+	pathParts := strings.Split(strings.Trim(r.URL.Path[len("/api/simulations/"):], "/"), "/")
+	if len(pathParts) == 0 || pathParts[0] == "" {
+		http.Error(w, "Not found", http.StatusNotFound)
+		return
+	}
+
+	if pathParts[0] == "create" && r.Method == "POST" {
+		rt.CreateSimulation(w, r)
+		return
+	}
+
+	idStr := pathParts[0]
+
+	if len(pathParts) == 1 {
+		if r.Method == "GET" {
+			rt.GetSimulationDetails(w, r, idStr)
+		} else if r.Method == "DELETE" {
+			rt.DeleteSimulation(w, r, idStr)
+		} else {
+			http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+		}
+		return
+	}
+
+	if len(pathParts) > 1 {
+		action := pathParts[1]
+		if r.Method == "PUT" && action == "time" {
+			rt.UpdateSimulationTime(w, r, idStr)
+			return
+		}
+		if r.Method == "PUT" && action == "rename" {
+			rt.RenameSimulation(w, r, idStr)
+			return
+		}
+		if r.Method == "POST" && action == "upload" {
+			rt.UploadSimulationResource(w, r, idStr)
+			return
+		}
+		if r.Method == "DELETE" && action == "resources" && len(pathParts) > 2 {
+			fileName, _ := url.PathUnescape(pathParts[2])
+			rt.DeleteSimulationResource(w, r, idStr, fileName)
+			return
+		}
+	}
+
+	http.Error(w, "Not found", http.StatusNotFound)
+}
+
+func (rt *Router) OptionsHandler(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Access-Control-Allow-Origin", "*")
+	w.Header().Set("Access-Control-Allow-Methods", "GET, PUT, POST, DELETE, OPTIONS")
+	w.WriteHeader(http.StatusOK)
+}

server/routes/simulations.go

@@ -0,0 +1,265 @@
+package routes
+
+import (
+	"database/sql"
+	"encoding/json"
+	"fmt"
+	"io"
+	"log"
+	"net/http"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+func (rt *Router) CreateSimulation(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Access-Control-Allow-Origin", "*")
+
+	bodyBytes, err := io.ReadAll(r.Body)
+	if err != nil {
+		http.Error(w, "Failed to read request body", http.StatusBadRequest)
+		return
+	}
+	defer r.Body.Close()
+	configStr := string(bodyBytes)
+
+	if configStr == "" {
+		http.Error(w, "Config cannot be empty", http.StatusBadRequest)
+		return
+	}
+
+	hasPattern := false
+	var jsonParsed map[string]interface{}
+	err = json.Unmarshal(bodyBytes, &jsonParsed)
+	if err != nil {
+		http.Error(w, "Invalid configuration format: must be valid JSON", http.StatusBadRequest)
+		return
+	}
+
+	for k, v := range jsonParsed {
+		if k == "search.yaml" || k == "search" {
+			if searchMap, ok := v.(map[string]interface{}); ok {
+				if _, ok := searchMap["spiral"]; ok {
+					hasPattern = true
+				}
+				if _, ok := searchMap["lawnmower"]; ok {
+					hasPattern = true
+				}
+				if _, ok := searchMap["levy"]; ok {
+					hasPattern = true
+				}
+			}
+		}
+	}
+
+	if !hasPattern {
+		http.Error(w, "Simulation configuration must include a search pattern (spiral, lawnmower, or levy)", http.StatusBadRequest)
+		return
+	}
+
+	var existingID int
+	var existingName string
+	err = rt.DB.QueryRow("SELECT id, name FROM simulations WHERE config = ?", configStr).Scan(&existingID, &existingName)
+	if err == nil {
+		w.Header().Set("Content-Type", "application/json")
+		json.NewEncoder(w).Encode(map[string]interface{}{
+			"id":   existingID,
+			"name": existingName,
+		})
+		return
+	}
+
+	var count int
+	rt.DB.QueryRow("SELECT COUNT(*) FROM simulations").Scan(&count)
+	newName := fmt.Sprintf("simulation_%d", count+1)
+
+	for {
+		var temp int
+		err := rt.DB.QueryRow("SELECT id FROM simulations WHERE name = ?", newName).Scan(&temp)
+		if err == sql.ErrNoRows {
+			break
+		}
+		count++
+		newName = fmt.Sprintf("simulation_%d", count+1)
+	}
+
+	res, err := rt.DB.Exec("INSERT INTO simulations(name, config) VALUES(?, ?)", newName, configStr)
+	if err != nil {
+		log.Println("Insert simulation error:", err)
+		http.Error(w, "Failed to create", http.StatusInternalServerError)
+		return
+	}
+	newID, _ := res.LastInsertId()
+
+	resultsDir := filepath.Join("../results", newName)
+	os.MkdirAll(resultsDir, 0755)
+
+	w.Header().Set("Content-Type", "application/json")
+	json.NewEncoder(w).Encode(map[string]interface{}{
+		"id":   newID,
+		"name": newName,
+	})
+}
+
+func (rt *Router) GetSimulations(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Access-Control-Allow-Origin", "*")
+
+	rows, err := rt.DB.Query("SELECT id, name, config, created_at, search_time, total_time FROM simulations")
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+	defer rows.Close()
+
+	var sims []Simulation
+	for rows.Next() {
+		var s Simulation
+		err = rows.Scan(&s.ID, &s.Name, &s.Config, &s.CreatedAt, &s.SearchTime, &s.TotalTime)
+		if err != nil {
+			log.Println("Row scan error:", err)
+			continue
+		}
+		sims = append(sims, s)
+	}
+
+	if sims == nil {
+		sims = []Simulation{}
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	json.NewEncoder(w).Encode(sims)
+}
+
+func (rt *Router) GetSimulationDetails(w http.ResponseWriter, r *http.Request, idStr string) {
+	w.Header().Set("Access-Control-Allow-Origin", "*")
+
+	var s Simulation
+	err := rt.DB.QueryRow("SELECT id, name, config, created_at, search_time, total_time FROM simulations WHERE id = ?", idStr).Scan(&s.ID, &s.Name, &s.Config, &s.CreatedAt, &s.SearchTime, &s.TotalTime)
+	if err != nil {
+		if err == sql.ErrNoRows {
+			http.Error(w, "Simulation not found", http.StatusNotFound)
+		} else {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+		}
+		return
+	}
+
+	rows, err := rt.DB.Query("SELECT filename FROM resources WHERE simulation_id = ?", s.ID)
+	if err == nil {
+		defer rows.Close()
+		for rows.Next() {
+			var fname string
+			if err := rows.Scan(&fname); err == nil {
+				s.Resources = append(s.Resources, fname)
+				if stat, err := os.Stat(filepath.Join("../results", s.Name, fname)); err == nil {
+					s.TotalSizeBytes += stat.Size()
+				}
+			}
+		}
+	}
+	if s.Resources == nil {
+		s.Resources = []string{}
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	json.NewEncoder(w).Encode(s)
+}
+
+func (rt *Router) RenameSimulation(w http.ResponseWriter, r *http.Request, idStr string) {
+	w.Header().Set("Access-Control-Allow-Origin", "*")
+
+	var reqBody struct {
+		Name string `json:"name"`
+	}
+
+	err := json.NewDecoder(r.Body).Decode(&reqBody)
+	if err != nil || strings.TrimSpace(reqBody.Name) == "" {
+		http.Error(w, "Invalid request body or missing name", http.StatusBadRequest)
+		return
+	}
+	defer r.Body.Close()
+
+	newName := strings.TrimSpace(reqBody.Name)
+
+	var oldName string
+	err = rt.DB.QueryRow("SELECT name FROM simulations WHERE id = ?", idStr).Scan(&oldName)
+	if err != nil {
+		http.Error(w, "Simulation not found", http.StatusNotFound)
+		return
+	}
+
+	// Make sure the new name doesn't already exist
+	var tempID int
+	err = rt.DB.QueryRow("SELECT id FROM simulations WHERE name = ?", newName).Scan(&tempID)
+	if err == nil {
+		http.Error(w, "A simulation with that name already exists", http.StatusConflict)
+		return
+	}
+
+	// Rename the physical storage folder to maintain link parity
+	oldDirPath := filepath.Join("../results", oldName)
+	newDirPath := filepath.Join("../results", newName)
+	if _, statErr := os.Stat(oldDirPath); statErr == nil {
+		err = os.Rename(oldDirPath, newDirPath)
+		if err != nil {
+			log.Println("Error renaming directory:", err)
+			http.Error(w, "Failed to rename results directory", http.StatusInternalServerError)
+			return
+		}
+	} else {
+		// Just ensure target dir exists
+		os.MkdirAll(newDirPath, 0755)
+	}
+
+	_, err = rt.DB.Exec("UPDATE simulations SET name = ? WHERE id = ?", newName, idStr)
+	if err != nil {
+		// Attempt revert if DB dies halfway 
+		os.Rename(newDirPath, oldDirPath)
+		log.Println("Update simulation name error:", err)
+		http.Error(w, "Failed to update database", http.StatusInternalServerError)
+		return
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	json.NewEncoder(w).Encode(map[string]string{"status": "success", "new_name": newName})
+}
+
+func (rt *Router) DeleteSimulation(w http.ResponseWriter, r *http.Request, idStr string) {
+	w.Header().Set("Access-Control-Allow-Origin", "*")
+
+	var name string
+	err := rt.DB.QueryRow("SELECT name FROM simulations WHERE id = ?", idStr).Scan(&name)
+	if err != nil {
+		if err == sql.ErrNoRows {
+			http.Error(w, "Simulation not found", http.StatusNotFound)
+		} else {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+		}
+		return
+	}
+
+	// Attempt dropping resource map hooks first
+	_, err = rt.DB.Exec("DELETE FROM resources WHERE simulation_id = ?", idStr)
+	if err != nil {
+		log.Println("Warning: Error deleting resources map from DB:", err)
+	}
+	
+	_, err = rt.DB.Exec("DELETE FROM simulations WHERE id = ?", idStr)
+	if err != nil {
+		log.Println("Error deleting simulation from DB:", err)
+		http.Error(w, "Failed to delete from database", http.StatusInternalServerError)
+		return
+	}
+
+	// Physically destroy data payload mapped onto it 
+	dirPath := filepath.Join("../results", name)
+	if _, statErr := os.Stat(dirPath); statErr == nil {
+		err = os.RemoveAll(dirPath)
+		if err != nil {
+			log.Println("Warning: Failed fully deleting physical directory items:", err)
+		}
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	json.NewEncoder(w).Encode(map[string]string{"status": "success"})
+}

server/routes/time.go

@@ -0,0 +1,38 @@
+package routes
+
+import (
+	"encoding/json"
+	"log"
+	"net/http"
+)
+
+func (rt *Router) UpdateSimulationTime(w http.ResponseWriter, r *http.Request, idStr string) {
+	w.Header().Set("Access-Control-Allow-Origin", "*")
+
+	var reqBody struct {
+		SearchTime *float64 `json:"search_time"`
+		TotalTime  *float64 `json:"total_time"`
+	}
+
+	err := json.NewDecoder(r.Body).Decode(&reqBody)
+	if err != nil {
+		http.Error(w, "Invalid request body", http.StatusBadRequest)
+		return
+	}
+	defer r.Body.Close()
+
+	if reqBody.SearchTime == nil || reqBody.TotalTime == nil {
+		http.Error(w, "Missing search_time or total_time", http.StatusBadRequest)
+		return
+	}
+
+	_, err = rt.DB.Exec("UPDATE simulations SET search_time = ?, total_time = ? WHERE id = ?", *reqBody.SearchTime, *reqBody.TotalTime, idStr)
+	if err != nil {
+		log.Println("Update simulation error:", err)
+		http.Error(w, "Failed to update", http.StatusInternalServerError)
+		return
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	json.NewEncoder(w).Encode(map[string]string{"status": "success"})
+}

server/routes/transcoder.go

@@ -1,4 +1,4 @@
-package main
+package routes
 
 import (
 	"log"
@@ -8,7 +8,7 @@ import (
 	"strings"
 )
 
-func transcodeIfNeeded(simDir, filename string) string {
+func TranscodeIfNeeded(simDir, filename string) string {
 	ext := strings.ToLower(filepath.Ext(filename))
 	if ext != ".avi" {
 		return filename
@@ -19,7 +19,6 @@ func transcodeIfNeeded(simDir, filename string) string {
 	aviPath := filepath.Join(simDir, filename)
 	mp4Path := filepath.Join(simDir, mp4Filename)
 
-	// If the file was already transcoded prior, just remove the stale .avi and return .mp4
 	if _, err := os.Stat(mp4Path); err == nil {
 		os.Remove(aviPath)
 		return mp4Filename
@@ -27,7 +26,7 @@ func transcodeIfNeeded(simDir, filename string) string {
 
 	log.Printf("Attempting GPU Transcoding (h264_nvenc) %s to %s...\n", aviPath, mp4Path)
 	cmdGPU := exec.Command("ffmpeg", "-y", "-i", aviPath, "-c:v", "h264_nvenc", "-pix_fmt", "yuv420p", "-movflags", "+faststart", mp4Path)
-	
+
 	if err := cmdGPU.Run(); err == nil {
 		os.Remove(aviPath)
 		return mp4Filename
@@ -35,7 +34,7 @@ func transcodeIfNeeded(simDir, filename string) string {
 
 	log.Printf("GPU transcoding failed/unavailable, falling back to CPU (libx264) for %s...\n", aviPath)
 	cmdCPU := exec.Command("ffmpeg", "-y", "-i", aviPath, "-c:v", "libx264", "-pix_fmt", "yuv420p", "-movflags", "+faststart", mp4Path)
-	
+
 	if err := cmdCPU.Run(); err == nil {
 		os.Remove(aviPath)
 		return mp4Filename

src/lib/DualVideoViewer.svelte

@@ -1,5 +1,6 @@
 <script lang="ts">
-    let { simName, video1, video2, getResourceUrl } = $props();
+    let { simName, video1, video2, getResourceUrl, isEditing, onDelete } =
+        $props();
 </script>
 
 <div class="dual-viewer">
@@ -13,6 +14,15 @@
                         download
                         class="dl-link">[Download]</a
                     >
+                    {#if isEditing}
+                        <button
+                            class="delete-link"
+                            onclick={(e) => {
+                                e.preventDefault();
+                                onDelete(video1);
+                            }}>[Delete]</button
+                        >
+                    {/if}
                 </div>
                 <video controls src={getResourceUrl(simName, video1)} muted>
                     <track kind="captions" />
@@ -28,6 +38,15 @@
                         download
                         class="dl-link">[Download]</a
                     >
+                    {#if isEditing}
+                        <button
+                            class="delete-link"
+                            onclick={(e) => {
+                                e.preventDefault();
+                                onDelete(video2);
+                            }}>[Delete]</button
+                        >
+                    {/if}
                 </div>
                 <video controls src={getResourceUrl(simName, video2)} muted>
                     <track kind="captions" />
@@ -70,6 +89,21 @@
     .dl-link:visited {
         color: #800080;
     }
+    .delete-link {
+        font-weight: normal;
+        margin-left: 10px;
+        color: #ff0000;
+        text-decoration: underline;
+        font-size: 14px;
+        background: none;
+        border: none;
+        cursor: pointer;
+        padding: 0;
+        font-family: inherit;
+    }
+    .delete-link:hover {
+        color: #cc0000;
+    }
     video {
         max-width: 100%;
         border: 1px solid #000;

src/lib/ImageCarousel.svelte

@@ -1,5 +1,5 @@
 <script lang="ts">
-    let { simName, images, getResourceUrl } = $props();
+    let { simName, images, getResourceUrl, isEditing, onDelete } = $props();
 
     let currentIndex = $state(0);
 
@@ -36,6 +36,15 @@
                             download
                             class="dl-link">[Download]</a
                         >
+                        {#if isEditing}
+                            <button
+                                class="delete-link"
+                                onclick={(e) => {
+                                    e.preventDefault();
+                                    onDelete(images[currentIndex]);
+                                }}>[Delete]</button
+                            >
+                        {/if}
                     </div>
                 </div>
                 <button class="nav-btn" onclick={next}>&gt;</button>
@@ -106,4 +115,19 @@
     .dl-link:visited {
         color: #800080;
     }
+    .delete-link {
+        font-weight: normal;
+        margin-left: 10px;
+        color: #ff0000;
+        text-decoration: underline;
+        font-size: 14px;
+        background: none;
+        border: none;
+        cursor: pointer;
+        padding: 0;
+        font-family: inherit;
+    }
+    .delete-link:hover {
+        color: #cc0000;
+    }
 </style>

src/lib/LogViewer.svelte

@@ -1,7 +1,7 @@
 <script lang="ts">
     import { onMount } from "svelte";
 
-    let { simName, resourceName } = $props();
+    let { simName, resourceName, isEditing, onDelete } = $props();
 
     let logContent = $state("");
     let error = $state("");
@@ -29,6 +29,16 @@
             class="dl-link"
             onclick={(e) => e.stopPropagation()}>[Download]</a
         >
+        {#if isEditing}
+            <button
+                class="delete-link"
+                onclick={(e) => {
+                    e.preventDefault();
+                    e.stopPropagation();
+                    onDelete(resourceName);
+                }}>[Delete]</button
+            >
+        {/if}
     </summary>
     <div class="log-content">
         {#if loading}
@@ -66,6 +76,21 @@
     .dl-link:visited {
         color: #800080;
     }
+    .delete-link {
+        font-weight: normal;
+        margin-left: 10px;
+        color: #ff0000;
+        text-decoration: underline;
+        font-size: 14px;
+        background: none;
+        border: none;
+        cursor: pointer;
+        padding: 0;
+        font-family: inherit;
+    }
+    .delete-link:hover {
+        color: #cc0000;
+    }
     details:not([open]) summary {
         border-bottom: none;
     }

src/lib/MediaItem.svelte

@@ -1,5 +1,5 @@
 <script lang="ts">
-    let { simName, resourceName } = $props();
+    let { simName, resourceName, isEditing, onDelete } = $props();
 
     function getResourceUrl(simName: string, resourceName: string) {
         return `/results/${simName}/${resourceName}`;
@@ -28,6 +28,15 @@
         <a href={getResourceUrl(simName, resourceName)} download class="dl-link"
             >[Download]</a
         >
+        {#if isEditing}
+            <button
+                class="delete-link"
+                onclick={(e) => {
+                    e.preventDefault();
+                    onDelete(resourceName);
+                }}>[Delete]</button
+            >
+        {/if}
     </div>
     {#if isImage(resourceName)}
         <img src={getResourceUrl(simName, resourceName)} alt={resourceName} />
@@ -82,7 +91,22 @@
         color: #0000ff;
         text-decoration: underline;
     }
-    a:visited {
+    .dl-link:visited {
         color: #800080;
     }
+    .delete-link {
+        font-weight: normal;
+        margin-left: 10px;
+        color: #ff0000;
+        text-decoration: underline;
+        font-size: 14px;
+        background: none;
+        border: none;
+        cursor: pointer;
+        padding: 0;
+        font-family: inherit;
+    }
+    .delete-link:hover {
+        color: #cc0000;
+    }
 </style>

src/routes/simulation/[id]/+page.svelte

@@ -239,6 +239,29 @@
             alert("Failed to delete the simulation: " + text);
         }
     }
+    async function handleDeleteResource(resourceName: string) {
+        if (
+            !confirm(
+                `Are you sure you want to permanently delete ${resourceName}?`,
+            )
+        )
+            return;
+        const res = await fetch(
+            `/api/simulations/${id}/resources/${encodeURIComponent(resourceName)}`,
+            {
+                method: "DELETE",
+            },
+        );
+        if (res.ok) {
+            simulation!.resources = simulation!.resources.filter(
+                (r) => r !== resourceName,
+            );
+            // Re-run stat calculation internally if needed or just sync state
+        } else {
+            const text = await res.text();
+            alert("Failed to delete resource: " + text);
+        }
+    }
 </script>
 
 <a href="/" class="back-link">&lt;&lt; Back to Index</a>
@@ -360,7 +383,12 @@
     <hr />
     <h2>Simulation Logs</h2>
     {#if simulation.resources && simulation.resources.includes("log.txt")}
-        <LogViewer simName={simulation.name} resourceName="log.txt" />
+        <LogViewer
+            simName={simulation.name}
+            resourceName="log.txt"
+            {isEditing}
+            onDelete={handleDeleteResource}
+        />
     {:else}
         <p>No log.txt file found for this simulation.</p>
     {/if}
@@ -373,6 +401,8 @@
             video1={flightPathVideo}
             video2={cameraVideo}
             {getResourceUrl}
+            {isEditing}
+            onDelete={handleDeleteResource}
         />
     {/if}
 
@@ -384,13 +414,20 @@
             simName={simulation.name}
             images={imagesList}
             {getResourceUrl}
+            {isEditing}
+            onDelete={handleDeleteResource}
         />
     {/if}
 
     {#if otherResourcesList.length > 0}
         <div class="media-container">
             {#each otherResourcesList as res}
-                <MediaItem simName={simulation.name} resourceName={res} />
+                <MediaItem
+                    simName={simulation.name}
+                    resourceName={res}
+                    {isEditing}
+                    onDelete={handleDeleteResource}
+                />
             {/each}
         </div>
     {/if}