server: implement messages and gRPC support for creating messages

server/api/message.go

@@ -0,0 +1,99 @@
+package api
+
+import (
+	"errors"
+	"fmt"
+	"log/slog"
+	"net/http"
+	"time"
+
+	"github.com/go-chi/chi/v5"
+	"github.com/go-chi/render"
+	"github.com/google/uuid"
+)
+
+type Message struct {
+	ID      uuid.UUID
+	Channel Channel
+	Created time.Time
+	Content string
+	Audio   File
+}
+
+type MessagePayload struct {
+	*Message
+}
+
+func GetMessage(w http.ResponseWriter, r *http.Request) {
+	slog.Debug("message: entering GetMessage handler")
+
+	messageID := chi.URLParam(r, "messageID")
+	parsed, err := uuid.Parse(messageID)
+	if err != nil {
+		render.Render(w, r, ErrInvalidRequest(err))
+		return
+	}
+
+	msg, err := dbGetMessage(parsed.String())
+	if err != nil {
+		if errors.Is(err, ErrMessageNotFound) {
+			render.Render(w, r, ErrNotFound)
+		} else {
+			slog.Error("message: failed to fetch message", "messageid", parsed.String(), "error", err)
+			render.Render(w, r, ErrInternal(err))
+		}
+		return
+	}
+
+	slog.Debug("message: rendering message", "messageid", msg.ID)
+	if err := render.Render(w, r, NewMessagePayloadResponse(msg)); err != nil {
+		slog.Error("message: failed to render message", "messageid", parsed.String(), "error", err)
+		render.Render(w, r, ErrInternal(err))
+	}
+}
+
+func ListMessages(w http.ResponseWriter, r *http.Request) {
+	slog.Debug("message: entering ListMessages handler")
+
+	channelID := chi.URLParam(r, "channelID")
+	parsed, err := uuid.Parse(channelID)
+	if err != nil {
+		render.Render(w, r, ErrInvalidRequest(err))
+		return
+	}
+
+	var from, to *time.Time
+	if v := r.URL.Query().Get("from"); v != "" {
+		t, err := time.Parse(time.RFC3339, v)
+		if err != nil {
+			render.Render(w, r, ErrInvalidRequest(fmt.Errorf("invalid 'from' timestamp: %w", err)))
+			return
+		}
+		from = &t
+	}
+	if v := r.URL.Query().Get("to"); v != "" {
+		t, err := time.Parse(time.RFC3339, v)
+		if err != nil {
+			render.Render(w, r, ErrInvalidRequest(fmt.Errorf("invalid 'to' timestamp: %w", err)))
+			return
+		}
+		to = &t
+	}
+
+	messages, err := dbGetMessagesByChannel(parsed.String(), from, to)
+	if err != nil {
+		if errors.Is(err, ErrMessageNotFound) {
+			render.Render(w, r, ErrNotFound)
+		} else {
+			slog.Error("message: failed to fetch messages", "channelid", parsed.String(), "error", err)
+			render.Render(w, r, ErrInternal(err))
+		}
+		return
+	}
+
+	slog.Debug("message: successfully fetched messages", "channelid", parsed.String(), "count", len(messages))
+	if err := render.RenderList(w, r, NewMessageListResponse(messages)); err != nil {
+		slog.Error("message: failed to render message list", "channelid", parsed.String(), "error", err)
+		render.Render(w, r, ErrInternal(err))
+	}
+}