chore: import clean Agent Desk snapshot (2/7)

internal/handlers/api/customer_handler.go

@@ -0,0 +1,35 @@
+package api
+
+import (
+	"agent-desk/internal/pkg/config"
+	"agent-desk/internal/pkg/httpx"
+	"agent-desk/internal/pkg/openidentity"
+	"agent-desk/internal/services"
+
+	"github.com/gin-gonic/gin"
+)
+
+func CustomerPostSession_exchange(ctx *gin.Context) {
+	channel := services.ChannelService.GetEnabledChannel(ctx)
+	if channel == nil {
+		httpx.WriteJSON(ctx, httpx.JsonErrorMsg(ctx, "error.e0209"))
+		return
+	}
+	identity := config.Current().Identity
+	externalUser, err := openidentity.GetExternalUser(ctx, openidentity.Secrets{
+		UserToken:      services.ChannelService.GetUserTokenSecret(channel),
+		IdentityHMAC:   identity.Secret,
+		IdentityMaxAge: identity.MaxAge(),
+		ChannelID:      channel.ChannelID,
+	})
+	if err != nil {
+		httpx.WriteJSON(ctx, err)
+		return
+	}
+	resp, err := services.CustomerSessionService.Exchange(channel, *externalUser)
+	if err != nil {
+		httpx.WriteJSON(ctx, err)
+		return
+	}
+	httpx.WriteJSON(ctx, resp)
+}