Bold questions

internal/server/changes.go

@@ -0,0 +1,74 @@
+package server
+
+import (
+	"errors"
+	"fmt"
+	"net/http"
+	"regexp"
+
+	"g.fc.run/misc/byre/internal/api"
+	"g.fc.run/misc/byre/internal/git"
+)
+
+var objectID = regexp.MustCompile(`^[0-9a-f]{40}([0-9a-f]{24})?$`)
+
+func (s *Server) GetTaskChanges(w http.ResponseWriter, r *http.Request, taskID string, params api.GetTaskChangesParams) {
+	t, err := s.store.GetTask(r.Context(), taskID)
+	if err != nil {
+		writeStoreError(w, err)
+		return
+	}
+	if t.Status != api.TaskStatusActive {
+		writeError(w, http.StatusConflict, fmt.Errorf("task %s is %s and has no worktree", t.Id, t.Status))
+		return
+	}
+
+	p, err := s.store.GetProject(r.Context(), t.ProjectId)
+	if err != nil {
+		writeStoreError(w, err)
+		return
+	}
+
+	since := ""
+	if params.Since != nil {
+		since = *params.Since
+		if !objectID.MatchString(since) {
+			writeError(w, http.StatusBadRequest, errors.New("since must be a full object id"))
+			return
+		}
+	}
+
+	changes, err := git.Changes(t.WorktreePath, p.DefaultBranch, since)
+	if err != nil {
+		writeError(w, http.StatusInternalServerError, err)
+		return
+	}
+	writeJSON(w, http.StatusOK, changes)
+}
+
+func (s *Server) GetTaskDiff(w http.ResponseWriter, r *http.Request, taskID string, params api.GetTaskDiffParams) {
+	t, err := s.store.GetTask(r.Context(), taskID)
+	if err != nil {
+		writeStoreError(w, err)
+		return
+	}
+	if t.Status != api.TaskStatusActive {
+		writeError(w, http.StatusConflict, fmt.Errorf("task %s is %s and has no worktree", t.Id, t.Status))
+		return
+	}
+	if !objectID.MatchString(params.Base) || !objectID.MatchString(params.Tree) {
+		writeError(w, http.StatusBadRequest, errors.New("base and tree must be full object ids"))
+		return
+	}
+
+	oldPath := ""
+	if params.OldPath != nil {
+		oldPath = *params.OldPath
+	}
+	patch, err := git.FileDiff(t.WorktreePath, params.Base, params.Tree, params.Path, oldPath)
+	if err != nil {
+		writeError(w, http.StatusInternalServerError, err)
+		return
+	}
+	writeJSON(w, http.StatusOK, api.FileDiff{Path: params.Path, Patch: patch})
+}