package app

import (
	"bytes"
	"context"
	"os"
	"path/filepath"
	"strings"
	"testing"
	"time"

	"gitea.maximumdirect.net/eric/narratio/internal/artifacts"
	"gitea.maximumdirect.net/eric/narratio/internal/manifest"
)

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

	var out bytes.Buffer
	args := []string{"--config", pipelinePath, "--campaign", campaignPath, "--session", sessionPath}

	if err := Plan(context.Background(), args, &out); err != nil {
		t.Fatalf("first Plan() error = %v", err)
	}
	got := out.String()
	if !strings.Contains(got, "narratio plan: workdir prepared at") {
		t.Fatalf("first output = %q, want workdir prepared", got)
	}
	for _, name := range []string{"prepare", "transcribe", "merge", "polish", "normalize", "trim", "analyze", "archive", "notify"} {
		if !strings.Contains(got, name+": run") {
			t.Fatalf("first output = %q, missing stage %q", got, name)
		}
	}
	if !strings.Contains(got, "totals: run=9 skip=0") {
		t.Fatalf("first output = %q, want totals", got)
	}

	sessionWorkdir := artifacts.SessionWorkDirForCampaign(workspaceRoot, "sample-campaign", "2026-05-03")
	expectedDirs := []string{
		sessionWorkdir,
		filepath.Join(sessionWorkdir, "inputs"),
		filepath.Join(sessionWorkdir, "audio"),
		filepath.Join(sessionWorkdir, "transcripts", "raw"),
		filepath.Join(sessionWorkdir, "transcripts", "trimmed"),
		filepath.Join(sessionWorkdir, "artifacts"),
		filepath.Join(sessionWorkdir, "config"),
		filepath.Join(sessionWorkdir, "logs"),
	}
	for _, dir := range expectedDirs {
		assertDir(t, dir)
	}

	out.Reset()
	if err := Plan(context.Background(), args, &out); err != nil {
		t.Fatalf("second Plan() error = %v", err)
	}
	if !strings.Contains(out.String(), "narratio plan: workdir prepared at") {
		t.Fatalf("second output = %q, want workdir prepared", out.String())
	}
}

func TestPlanShowsRunAndSkipFromManifest(t *testing.T) {
	workspaceRoot := t.TempDir()
	pipelinePath, campaignPath, sessionPath := writeValidConfigFiles(t, workspaceRoot)
	manifestPath := filepath.Join(workspaceRoot, "work", "sample-campaign", "2026-05-03", "manifest.json")

	store := &manifest.LocalStore{}
	m := manifest.New("2026-05-03", time.Date(2026, 5, 3, 10, 0, 0, 0, time.UTC))
	m.MarkStageSucceeded("prepare", time.Date(2026, 5, 3, 10, 1, 0, 0, time.UTC), nil)
	m.MarkStageSucceeded("transcribe", time.Date(2026, 5, 3, 10, 2, 0, 0, time.UTC), nil)
	if err := store.Save(context.Background(), manifestPath, m); err != nil {
		t.Fatalf("save manifest: %v", err)
	}

	var out bytes.Buffer
	if err := Plan(context.Background(), []string{"--config", pipelinePath, "--campaign", campaignPath, "--session", sessionPath}, &out); err != nil {
		t.Fatalf("Plan() error = %v", err)
	}
	got := out.String()
	if !strings.Contains(got, "prepare: skip") || !strings.Contains(got, "transcribe: skip") {
		t.Fatalf("output = %q, want prepare/transcribe skipped", got)
	}
	if !strings.Contains(got, "trim: run") {
		t.Fatalf("output = %q, want trim run", got)
	}
	if !strings.Contains(got, "totals: run=7 skip=2") {
		t.Fatalf("output = %q, want totals run=7 skip=2", got)
	}
}

func TestPlanFailsWhenConfiguredSecretsDirMissing(t *testing.T) {
	workspaceRoot := t.TempDir()
	configDir := t.TempDir()
	pipelinePath := filepath.Join(configDir, "pipeline.yml")
	campaignPath := writeAppTestCampaignConfig(t, configDir)
	sessionPath := filepath.Join(configDir, "session.yml")

	pipelineYAML := `workspace:
  root: ` + workspaceRoot + `
storage:
  backend: local
secrets:
  env_dir: ./missing-secrets
whisperx:
  transcribe_url: https://example.com/transcribe
seriatim:
  binary: seriatim
audita:
  binary: audita
analyzer:
  timeout: 20m
notification:
  timeout: 10s
`
	sessionYAML := `session_id: 2026-05-03
campaign: sample-campaign
inputs:
  audio_dir: ./audio
  speakers_file: ./speakers.yml
  autocorrect_file: ./autocorrect.yml
  glossary_file: ./glossary.yml
`
	if err := os.WriteFile(pipelinePath, []byte(pipelineYAML), 0o644); err != nil {
		t.Fatalf("write pipeline.yml: %v", err)
	}
	if err := os.WriteFile(sessionPath, []byte(sessionYAML), 0o644); err != nil {
		t.Fatalf("write session.yml: %v", err)
	}

	var out bytes.Buffer
	err := Plan(context.Background(), []string{"--config", pipelinePath, "--campaign", campaignPath, "--session", sessionPath}, &out)
	if err == nil {
		t.Fatal("expected error, got nil")
	}
	if !strings.Contains(err.Error(), "read secrets env_dir") {
		t.Fatalf("error = %q, want secrets read error context", err.Error())
	}
}

func assertDir(t *testing.T, path string) {
	t.Helper()
	info, err := os.Stat(path)
	if err != nil {
		t.Fatalf("Stat(%q) error = %v", path, err)
	}
	if !info.IsDir() {
		t.Fatalf("%q is not a directory", path)
	}
}