1 files changed, 138 insertions, 0 deletions
diff --git a/internal/admin/api_courses.go b/internal/admin/api_courses.go
new file mode 100644
index 0000000..63b356c
--- /dev/null
+++ b/internal/admin/api_courses.go
@@ -0,0 +1,138 @@
+package admin
+
+import (
+	"net/http"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+func (s *AdminServer) handleCourses(w http.ResponseWriter, r *http.Request) {
+	switch r.Method {
+	case http.MethodGet:
+		ids, err := listYAMLFiles(s.dataDir, "courses")
+		if err != nil {
+			writeJSON(w, map[string]any{"error": err.Error()})
+			return
+		}
+		if ids == nil {
+			ids = []string{}
+		}
+		writeJSON(w, ids)
+	case http.MethodPost:
+		var m map[string]any
+		if err := readJSON(r, &m); err != nil {
+			writeJSON(w, map[string]any{"error": "invalid json"})
+			return
+		}
+		id, _ := m["id"].(string)
+		if strings.TrimSpace(id) == "" {
+			writeJSON(w, map[string]any{"error": "missing id"})
+			return
+		}
+		delete(m, "id")
+		path := filepath.Join(s.dataDir, "courses", id+".yaml")
+		if _, err := os.Stat(path); err == nil {
+			writeJSON(w, map[string]any{"error": "course already exists"})
+			return
+		}
+		newContent, err := writeMapAsYAML(path, m)
+		if err != nil {
+			writeJSON(w, map[string]any{"error": "write error: " + err.Error()})
+			return
+		}
+		s.undoStack.Push(ChangeDesc{
+			Description: "Created course " + id,
+			FilePath:    path,
+			NewContent:  newContent,
+			IsCreate:    true,
+		})
+		writeJSON(w, map[string]any{"ok": true, "id": id})
+	default:
+		http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
+	}
+}
+
+func (s *AdminServer) handleCourseByID(w http.ResponseWriter, r *http.Request) {
+	id := strings.TrimPrefix(r.URL.Path, "/api/courses/")
+	if id == "" {
+		http.Error(w, `{"error":"missing id"}`, http.StatusBadRequest)
+		return
+	}
+
+	switch r.Method {
+	case http.MethodGet:
+		data, path, err := findYAMLFileInSubdirs(s.dataDir, "courses", id)
+		if err != nil {
+			writeJSON(w, map[string]any{"error": "not found: " + id})
+			return
+		}
+		raw, err := yamlToMap(data)
+		if err != nil {
+			writeJSON(w, map[string]any{"error": "parse error: " + err.Error()})
+			return
+		}
+		raw["id"] = id
+		raw["_path"] = path
+		raw["_raw"] = string(data)
+		writeJSON(w, raw)
+
+	case http.MethodPost, http.MethodPut:
+		var body map[string]any
+		if err := readJSON(r, &body); err != nil {
+			writeJSON(w, map[string]any{"error": "invalid JSON: " + err.Error()})
+			return
+		}
+		delete(body, "id")
+		delete(body, "_path")
+		delete(body, "_raw")
+
+		path := filepath.Join(s.dataDir, "courses", id+".yaml")
+		var oldContent []byte
+		if existing, err := snapshotFile(path); err == nil {
+			oldContent = existing
+		}
+
+		newContent, err := writeMapAsYAML(path, body)
+		if err != nil {
+			writeJSON(w, map[string]any{"error": "write error: " + err.Error()})
+			return
+		}
+
+		isCreate := oldContent == nil
+		desc := "Updated course " + id
+		if isCreate {
+			desc = "Created course " + id
+		}
+		s.undoStack.Push(ChangeDesc{
+			Description: desc,
+			FilePath:    path,
+			OldContent:  oldContent,
+			NewContent:  newContent,
+			IsCreate:    isCreate,
+		})
+		writeJSON(w, map[string]any{"ok": true, "id": id})
+
+	case http.MethodDelete:
+		_, path, err := findYAMLFileInSubdirs(s.dataDir, "courses", id)
+		if err != nil {
+			writeJSON(w, map[string]any{"error": "not found: " + id})
+			return
+		}
+		oldContent, _ := snapshotFile(path)
+		if err := os.Remove(path); err != nil {
+			writeJSON(w, map[string]any{"error": "delete error: " + err.Error()})
+			return
+		}
+		s.undoStack.Push(ChangeDesc{
+			Description: "Deleted course " + id,
+			FilePath:    path,
+			OldContent:  oldContent,
+			IsDelete:    true,
+		})
+		writeJSON(w, map[string]any{"ok": true, "id": id})
+
+	default:
+		http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
+	}
+}