// action_specs_test.go contains canonical-route tests for CI variable delete behavior.
package civariables

import (
	"context"
	"net/http"
	"testing"

	"github.com/modelcontextprotocol/go-sdk/mcp"

	"github.com/jmrplens/gitlab-mcp-server/v2/internal/testutil"
	"github.com/jmrplens/gitlab-mcp-server/v2/internal/toolutil"
)

// TestActionSpecs_DeleteError verifies that the delete route returns an error when the GitLab API fails.
func TestActionSpecs_DeleteError(t *testing.T) {
	mux := http.NewServeMux()
	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
		if r.Method == http.MethodDelete {
			testutil.RespondJSON(w, http.StatusForbidden, `{"message":"server error"}`)
			return
		}
		w.WriteHeader(http.StatusOK)
	})
	client := testutil.NewTestClient(t, mux)
	byTool := ciVariableSpecsByTool(t, ActionSpecs(client))

	_, err := byTool["gitlab_ci_variable_delete"].Route.Handler(t.Context(), map[string]any{"project_id": "1", "key": "MY_VAR", "environment_scope": ""})
	if err == nil {
		t.Fatal("expected error from delete with failing backend")
	}
}

// TestCatalogSurface_DeleteConfirmDeclined covers destructive confirmation when the user declines.
func TestCatalogSurface_DeleteConfirmDeclined(t *testing.T) {
	client := testutil.NewTestClient(t, http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
		w.WriteHeader(http.StatusNoContent)
	}))
	byTool := ciVariableSpecsByTool(t, ActionSpecs(client))

	server := mcp.NewServer(&mcp.Implementation{Name: "test", Version: "0.0.1"}, nil)
	toolutil.RegisterSurfaceToolFromSpec(server, byTool["gitlab_ci_variable_delete"], toolutil.SurfaceToolRegisterOptions{
		Description: "Test CI variable destructive confirmation.",
		Icons:       toolutil.IconVariable,
	})

	st, ct := mcp.NewInMemoryTransports()
	ctx := context.Background()
	serverSession, err := server.Connect(ctx, st, nil)
	if err != nil {
		t.Fatalf("server connect: %v", err)
	}
	mcpClient := mcp.NewClient(&mcp.Implementation{Name: "c", Version: "0.0.1"}, &mcp.ClientOptions{
		ElicitationHandler: func(_ context.Context, _ *mcp.ElicitRequest) (*mcp.ElicitResult, error) {
			return &mcp.ElicitResult{Action: "decline"}, nil
		},
	})
	session, connectErr := mcpClient.Connect(ctx, ct, nil)
	if connectErr != nil {
		t.Fatalf("client connect: %v", connectErr)
	}
	t.Cleanup(func() {
		session.Close()
		_ = serverSession.Wait()
	})

	result, err := session.CallTool(ctx, &mcp.CallToolParams{
		Name:      "gitlab_ci_variable_delete",
		Arguments: map[string]any{"project_id": "1", "key": "MY_VAR", "environment_scope": ""},
	})
	if err != nil {
		t.Fatalf("CallTool error: %v", err)
	}
	if result == nil {
		t.Fatal("expected non-nil result for declined confirmation")
	}
	found := false
	for _, c := range result.Content {
		if tc, ok := c.(*mcp.TextContent); ok && tc.Text != "" {
			found = true
		}
	}
	if !found {
		t.Error("expected non-empty text content in cancellation result")
	}
}
