Add migration scripts, activity handler, and registry components for equipment, materials, and people

internal/api/handlers/activity.go

@@ -0,0 +1,42 @@
+package handlers
+
+import (
+	"net/http"
+
+	"github.com/jmoiron/sqlx"
+	"workorders/internal/model"
+)
+
+type ActivityHandler struct{ db *sqlx.DB }
+
+func NewActivityHandler(db *sqlx.DB) *ActivityHandler { return &ActivityHandler{db: db} }
+
+func (h *ActivityHandler) List(w http.ResponseWriter, r *http.Request) {
+	woID, err := intParam(r, "id")
+	if err != nil {
+		respondError(w, http.StatusBadRequest, "invalid id")
+		return
+	}
+	var rows []model.AuditEntry
+	err = h.db.Select(&rows, `
+		SELECT
+			a.id,
+			a.action,
+			ISNULL(a.old_value,'') AS old_value,
+			ISNULL(a.new_value,'') AS new_value,
+			ISNULL(u.display_name, ISNULL(u.username, CAST(a.performed_by AS NVARCHAR(100)))) AS performed_by,
+			a.performed_at
+		FROM wo_audit_log a
+		LEFT JOIN users u ON u.id = a.performed_by
+		WHERE a.wo_id = @p1
+		ORDER BY a.performed_at DESC`,
+		woID)
+	if err != nil {
+		respondError(w, http.StatusInternalServerError, err.Error())
+		return
+	}
+	if rows == nil {
+		rows = []model.AuditEntry{}
+	}
+	respond(w, http.StatusOK, rows)
+}