package app

import (
	"context"
	"io"
	"os"
	"path/filepath"
	"strings"
	"testing"

	"gitea.maximumdirect.net/eric/narratio/internal/config"
)

func TestRunProfileSelectionFlowsThroughSharedLoader(t *testing.T) {
	workspaceRoot := t.TempDir()
	pipelinePath, campaignPath, sessionPath := writeValidConfigFiles(t, workspaceRoot)
	enableCommandTestProfiles(t, pipelinePath)

	original := executeStagesFn
	t.Cleanup(func() { executeStagesFn = original })
	var language string
	executeStagesFn = func(_ context.Context, cfg *config.Config, _ BoundedPlan, _ RunOptions) (*RunSummary, error) {
		language = cfg.Pipeline.WhisperX.Language
		return &RunSummary{SessionID: cfg.Session.SessionID, ManifestPath: "manifest.json"}, nil
	}

	if err := Run(context.Background(), []string{
		"2026-05-03", "--config", pipelinePath, "--campaign-file", campaignPath, "--session", sessionPath, "--profile", "testing",
	}, io.Discard); err != nil {
		t.Fatal(err)
	}
	if language != "fr" {
		t.Fatalf("explicit profile language = %q, want fr", language)
	}

	if err := Run(context.Background(), []string{
		"2026-05-03", "--config", pipelinePath, "--campaign-file", campaignPath, "--session", sessionPath,
	}, io.Discard); err != nil {
		t.Fatal(err)
	}
	if language != "en" {
		t.Fatalf("default profile language = %q, want en", language)
	}

	for _, profile := range []string{"unknown", ""} {
		err := Run(context.Background(), []string{
			"2026-05-03", "--config", pipelinePath, "--campaign-file", campaignPath, "--session", sessionPath, "--profile", profile,
		}, io.Discard)
		if err == nil || !strings.Contains(err.Error(), "profile") {
			t.Fatalf("profile %q error = %v, want selection rejection", profile, err)
		}
	}
}

func enableCommandTestProfiles(t *testing.T, pipelinePath string) {
	t.Helper()
	data, err := os.ReadFile(pipelinePath)
	if err != nil {
		t.Fatal(err)
	}
	composition := "composition:\n  default_profile: production\n  profiles:\n    production:\n      overlay: production.yml\n    testing:\n      overlay: testing.yml\n"
	if err := os.WriteFile(pipelinePath, append([]byte(composition), data...), 0o644); err != nil {
		t.Fatal(err)
	}
	dir := filepath.Dir(pipelinePath)
	if err := os.WriteFile(filepath.Join(dir, "production.yml"), []byte("whisperx:\n  language: en\n"), 0o644); err != nil {
		t.Fatal(err)
	}
	if err := os.WriteFile(filepath.Join(dir, "testing.yml"), []byte("whisperx:\n  language: fr\n"), 0o644); err != nil {
		t.Fatal(err)
	}
}