feat(completeion_link): add completion commands for link

core/handlers/completion/complete_link_handler.go

@@ -0,0 +1,47 @@
+package completion
+
+import (
+	"context"
+	"encoding/json"
+
+	"github.com/KristianJBorgwarth/dendrite.daemon/core/models"
+	"github.com/KristianJBorgwarth/dendrite.daemon/core/utils"
+	"github.com/KristianJBorgwarth/dendrite.daemon/persistence/repositories"
+)
+
+type completeLinkCommand struct {
+	LinkQuery string `json:"linkQuery"`
+}
+
+type CompleteLinkHandler struct{
+	uow *repositories.UnitOfWork
+}
+
+func NewCompleteLinkHandler() *CompleteLinkHandler {
+	return &CompleteLinkHandler{repositories.NewUnitOfWork()}
+}
+
+func (h *CompleteLinkHandler) Handle(ctx context.Context, raw json.RawMessage) (any, error) {
+	var cmd completeLinkCommand
+
+	if err := json.Unmarshal(raw, &cmd); err != nil {
+		return nil, err
+	}
+
+	tx, err := h.uow.Begin()
+	if err != nil {
+		return nil, err
+	}
+
+	defer h.uow.Rollback()
+	linkRepo := repositories.NewLinkRepository(tx)
+
+	links, err := linkRepo.Search(ctx, cmd.LinkQuery)
+	if err != nil {
+		return nil, err
+	}
+
+	slugs := utils.Select(links, func(l *models.Link) string {return l.TargetSlug()});
+
+	return slugs, nil
+}

core/handlers/completion/doc.go

@@ -0,0 +1,2 @@
+// Package completion provides handlers for completion commands
+package completion

persistence/repositories/link_repository.go

@@ -10,6 +10,7 @@ import (
 type ILinkRepository interface {
 	GetByNoteID(ctx context.Context, fromNoteID string) ([]*models.Link, error)
 	GetBySlug(ctx context.Context, targetSlug string) ([]*models.Link, error)
+	Search(ctx context.Context, query string) ([]*models.Link, error)
 }
 
 type linkRepository struct {
@@ -59,3 +60,23 @@ func (r *linkRepository) GetBySlug(ctx context.Context, targetSlug string) ([]*m
 
 	return links, nil
 }
+
+func (r *linkRepository) Search(ctx context.Context, query string) ([]*models.Link, error) {
+	rows, err := r.Transaction.QueryContext(ctx, `SELECT id, from_note_id, target_slug, raw, display, line, col FROM links WHERE raw LIKE ?`, "%"+query+"%")
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var links []*models.Link
+	for rows.Next() {
+		var id, fromNoteID, targetSlug, raw, display string
+		var line, col int
+		if err := rows.Scan(&id, &fromNoteID, &targetSlug, &raw, &display, &line, &col); err != nil {
+			return nil, err
+		}
+		links = append(links, models.NewLink(id, fromNoteID, targetSlug, raw, display, line, col))
+	}
+
+	return links, nil
+}