feat: mail service

mail/internal/adapters/redisstate/render_store.go

@@ -0,0 +1,74 @@
+package redisstate
+
+import (
+	"context"
+	"errors"
+	"fmt"
+
+	"galaxy/mail/internal/service/renderdelivery"
+
+	"github.com/redis/go-redis/v9"
+)
+
+// RenderStore provides the Redis-backed durable storage used by the
+// render-delivery use case.
+type RenderStore struct {
+	writer *AtomicWriter
+}
+
+// NewRenderStore constructs one Redis-backed render-delivery store.
+func NewRenderStore(client *redis.Client) (*RenderStore, error) {
+	if client == nil {
+		return nil, errors.New("new render store: nil redis client")
+	}
+
+	writer, err := NewAtomicWriter(client)
+	if err != nil {
+		return nil, fmt.Errorf("new render store: %w", err)
+	}
+
+	return &RenderStore{writer: writer}, nil
+}
+
+// MarkRendered stores one successfully materialized template delivery.
+func (store *RenderStore) MarkRendered(ctx context.Context, input renderdelivery.MarkRenderedInput) error {
+	if store == nil || store.writer == nil {
+		return errors.New("mark rendered in render store: nil store")
+	}
+	if ctx == nil {
+		return errors.New("mark rendered in render store: nil context")
+	}
+	if err := input.Validate(); err != nil {
+		return fmt.Errorf("mark rendered in render store: %w", err)
+	}
+
+	if err := store.writer.MarkRendered(ctx, MarkRenderedInput{
+		Delivery: input.Delivery,
+	}); err != nil {
+		return fmt.Errorf("mark rendered in render store: %w", err)
+	}
+
+	return nil
+}
+
+// MarkRenderFailed stores one classified terminal render failure.
+func (store *RenderStore) MarkRenderFailed(ctx context.Context, input renderdelivery.MarkRenderFailedInput) error {
+	if store == nil || store.writer == nil {
+		return errors.New("mark render failed in render store: nil store")
+	}
+	if ctx == nil {
+		return errors.New("mark render failed in render store: nil context")
+	}
+	if err := input.Validate(); err != nil {
+		return fmt.Errorf("mark render failed in render store: %w", err)
+	}
+
+	if err := store.writer.MarkRenderFailed(ctx, MarkRenderFailedInput{
+		Delivery: input.Delivery,
+		Attempt:  input.Attempt,
+	}); err != nil {
+		return fmt.Errorf("mark render failed in render store: %w", err)
+	}
+
+	return nil
+}