package web_test

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

	"github.com/stretchr/testify/require"

	"git.d-ma.be/mathias/tapir/internal/domain"
)

// TestRenderUploadProgressStatesForReview writes the upload page in each progress state
// to $TAPIR_SHOT_DIR as standalone HTML (light and dark), for a screenshot review of the
// visual claims tests cannot assert: that it looks like tapir and reads like a log of
// phases (ADR-035, #42). Opt-in: it does nothing unless the variable is set. The text is
// synthetic. Screenshot with any browser, for example:
//
//	TAPIR_SHOT_DIR=/tmp/shots go test -run TestRenderUploadProgressStatesForReview ./internal/web
//	chromium --headless --screenshot=/tmp/shots/running.png --window-size=900,900 /tmp/shots/running-light.html
func TestRenderUploadProgressStatesForReview(t *testing.T) {
	dir := os.Getenv("TAPIR_SHOT_DIR")
	if dir == "" {
		t.Skip("set TAPIR_SHOT_DIR to render the progress states for a screenshot review")
	}
	require.NoError(t, os.MkdirAll(dir, 0o750))
	app, _ := newUploadApp(t, audioOK, 200<<20)
	fixedClock(app)

	decide := twoEngineRun()
	decide[3] = step("engine_b", "Transcribing with iguana/kb-whisper", domain.StepDone, 9*time.Minute, 4*time.Minute, 0, 0)
	decide[4] = step("compare", "Comparing the two transcripts", domain.StepDone, 5*time.Minute, time.Second, 0, 0)
	decide[5] = step("decide", "Deciding the differences", domain.StepRunning, 4*time.Minute+30*time.Second, 0, 142, 282)

	failed := twoEngineRun()
	failed[3] = step("engine_b", "Transcribing with iguana/kb-whisper", domain.StepFailed, 3*time.Minute, time.Minute, 0, 0)

	done := []domain.ProgressStep{
		step("received", "Received", domain.StepDone, 22*time.Minute, 0, 0, 0),
		step("audio", "Preparing the audio", domain.StepDone, 22*time.Minute, 41*time.Second, 0, 0),
		step("engine_a", "Transcribing with iguana/pianissimo", domain.StepDone, 21*time.Minute, 2*time.Minute+10*time.Second, 0, 0),
		step("engine_b", "Transcribing with iguana/kb-whisper", domain.StepDone, 19*time.Minute, 4*time.Minute+5*time.Second, 0, 0),
		step("compare", "Comparing the two transcripts", domain.StepDone, 15*time.Minute, 2*time.Second, 0, 0),
		step("decide", "Deciding the differences", domain.StepDone, 15*time.Minute, 14*time.Minute, 282, 282),
		step("save", "Saving the transcript", domain.StepDone, time.Minute, time.Second, 0, 0),
	}

	cases := []struct {
		name, status, content string
		steps                 []domain.ProgressStep
		progressAgo, aliveAgo time.Duration
	}{
		{"running", "transcribing", "", twoEngineRun(), 10 * time.Second, 4 * time.Second},
		{"deciding", "transcribing", "", decide, 3 * time.Second, 3 * time.Second},
		{"quiet", "transcribing", "", decide, 6 * time.Minute, 4 * time.Second},
		{"lost", "transcribing", "", twoEngineRun(), 3 * time.Minute, 3 * time.Minute},
		{"failed", "failed", "transcription_failed", failed, 2 * time.Minute, 2 * time.Minute},
		{"done", "done", "Synthetic transcript text for the review.", done, time.Minute, time.Minute},
		{"queued", "queued", "", nil, 0, 0},
	}
	for _, c := range cases {
		id := seedUpload(t, userID, "Project notes (synthetic)", c.status, c.content)
		if c.steps != nil {
			seedProgress(t, id, c.steps, progressNow.Add(-c.progressAgo), progressNow.Add(-c.aliveAgo))
		}
		page := body(t, do(t, app, get("/uploads/"+id)))
		for _, theme := range []string{"light", "dark"} {
			html := page
			if theme == "dark" {
				html = strings.Replace(html, "<html", `<html data-theme="dark"`, 1)
			}
			require.NoError(t, os.WriteFile(filepath.Join(dir, c.name+"-"+theme+".html"), []byte(html), 0o600))
		}
	}
}