feat(ECR-042): OpsCMS FeedSlot 薄写面

Admin POST/PUT 复用 admin.cms.write；C 端 GET /home/feed-slots；首页无 active 槽隐藏推荐区、失败回退展示；无新 migration。 Co-authored-by: Cursor <cursoragent@cursor.com>
2026-08-13 20:02:01 +08:00
parent 655141980a
commit 56f661748a
27 changed files with 773 additions and 25 deletions
@@ -0,0 +1,143 @@
+package repository
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"strings"
+
+	"github.com/google/uuid"
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgconn"
+)
+
+// FeedSlotWriteInput is create/update payload.
+type FeedSlotWriteInput struct {
+	Code      string
+	Title     string
+	SlotKey   string
+	Placement string
+	Active    bool
+}
+
+// ListActiveFeedSlots returns active slots for placement.
+func (r *AdminRepo) ListActiveFeedSlots(ctx context.Context, placement string) ([]FeedSlotRow, error) {
+	rows, err := r.Pool.Query(ctx, `
+		SELECT id, code, title, slot_key, placement, active, system, updated_at
+		FROM ops_feed_slots
+		WHERE active = true AND placement = $1
+		ORDER BY code ASC
+		LIMIT 100`, placement)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	var out []FeedSlotRow
+	for rows.Next() {
+		var s FeedSlotRow
+		if err := rows.Scan(
+			&s.ID, &s.Code, &s.Title, &s.SlotKey, &s.Placement, &s.Active, &s.System, &s.UpdatedAt,
+		); err != nil {
+			return nil, err
+		}
+		out = append(out, s)
+	}
+	return out, rows.Err()
+}
+
+// CreateFeedSlotWithAudit inserts and audits.
+func (r *AdminRepo) CreateFeedSlotWithAudit(
+	ctx context.Context, adminID uuid.UUID, in FeedSlotWriteInput, meta json.RawMessage,
+) (*FeedSlotRow, error) {
+	tx, err := r.Pool.Begin(ctx)
+	if err != nil {
+		return nil, err
+	}
+	defer tx.Rollback(ctx)
+	var s FeedSlotRow
+	err = tx.QueryRow(ctx, `
+		INSERT INTO ops_feed_slots(code, title, slot_key, placement, active, system)
+		VALUES ($1,$2,$3,$4,$5,false)
+		RETURNING id, code, title, slot_key, placement, active, system, updated_at`,
+		in.Code, in.Title, in.SlotKey, in.Placement, in.Active,
+	).Scan(&s.ID, &s.Code, &s.Title, &s.SlotKey, &s.Placement, &s.Active, &s.System, &s.UpdatedAt)
+	if err != nil {
+		return nil, mapFeedSlotWriteErr(err)
+	}
+	if meta == nil {
+		meta = json.RawMessage(`{}`)
+	}
+	if _, err := tx.Exec(ctx, `
+		INSERT INTO admin_audit_logs(admin_id, action, target_type, target_id, meta)
+		VALUES ($1,'cms.feed_slot.create','feed_slot',$2,$3)`,
+		adminID, s.ID.String(), meta,
+	); err != nil {
+		return nil, err
+	}
+	if err := tx.Commit(ctx); err != nil {
+		return nil, err
+	}
+	return &s, nil
+}
+
+// UpdateFeedSlotWithAudit updates and audits.
+func (r *AdminRepo) UpdateFeedSlotWithAudit(
+	ctx context.Context, adminID, id uuid.UUID, in FeedSlotWriteInput, meta json.RawMessage,
+) (*FeedSlotRow, error) {
+	tx, err := r.Pool.Begin(ctx)
+	if err != nil {
+		return nil, err
+	}
+	defer tx.Rollback(ctx)
+	var system bool
+	var oldCode string
+	err = tx.QueryRow(ctx, `SELECT system, code FROM ops_feed_slots WHERE id=$1`, id).Scan(&system, &oldCode)
+	if errors.Is(err, pgx.ErrNoRows) {
+		return nil, pgx.ErrNoRows
+	}
+	if err != nil {
+		return nil, err
+	}
+	code := in.Code
+	if system {
+		code = oldCode
+	}
+	var s FeedSlotRow
+	err = tx.QueryRow(ctx, `
+		UPDATE ops_feed_slots
+		SET code=$2, title=$3, slot_key=$4, placement=$5, active=$6, updated_at=now()
+		WHERE id=$1
+		RETURNING id, code, title, slot_key, placement, active, system, updated_at`,
+		id, code, in.Title, in.SlotKey, in.Placement, in.Active,
+	).Scan(&s.ID, &s.Code, &s.Title, &s.SlotKey, &s.Placement, &s.Active, &s.System, &s.UpdatedAt)
+	if err != nil {
+		return nil, mapFeedSlotWriteErr(err)
+	}
+	if meta == nil {
+		meta = json.RawMessage(`{}`)
+	}
+	if _, err := tx.Exec(ctx, `
+		INSERT INTO admin_audit_logs(admin_id, action, target_type, target_id, meta)
+		VALUES ($1,'cms.feed_slot.update','feed_slot',$2,$3)`,
+		adminID, id.String(), meta,
+	); err != nil {
+		return nil, err
+	}
+	if err := tx.Commit(ctx); err != nil {
+		return nil, err
+	}
+	return &s, nil
+}
+
+func mapFeedSlotWriteErr(err error) error {
+	var pgErr *pgconn.PgError
+	if errors.As(err, &pgErr) && pgErr.Code == "23505" {
+		return errString("feed slot code conflict")
+	}
+	return err
+}
+
+// FeedSlotCodeConflict reports unique violation.
+func FeedSlotCodeConflict(err error) bool {
+	return err != nil && strings.Contains(err.Error(), "feed slot code conflict")
+}