package web

import (
	"context"
	"encoding/json"
	"io"
	"log/slog"
	"net/http"
	"net/http/cookiejar"
	"net/http/httptest"
	"net/url"
	"path/filepath"
	"regexp"
	"strconv"
	"strings"
	"sync"
	"testing"
	"time"

	_ "time/tzdata"

	"gitea.lab.audasmedia.com.au/sam/compass_teams_nhs/internal/auth"
	"gitea.lab.audasmedia.com.au/sam/compass_teams_nhs/internal/config"
	"gitea.lab.audasmedia.com.au/sam/compass_teams_nhs/internal/store"
)

const (
	testUser = "sam"
	testPass = "correct horse battery staple"
)

var csrfRe = regexp.MustCompile(`name="csrf" value="([^"]+)"`)

// newTestServer builds the web handler against a fresh SQLite database.
func newTestServer(t *testing.T) (*httptest.Server, *store.Store) {
	return newTestServerFull(t, config.CalendarConfig{}, config.AppriseConfig{})
}

// newTestServerCalendar is newTestServer with a Home Assistant calendar target.
func newTestServerCalendar(t *testing.T, cal config.CalendarConfig) (*httptest.Server, *store.Store) {
	return newTestServerFull(t, cal, config.AppriseConfig{})
}

// newTestServerNotify is newTestServer with an Apprise gateway and token.
func newTestServerNotify(t *testing.T, ap config.AppriseConfig) (*httptest.Server, *store.Store) {
	return newTestServerFull(t, config.CalendarConfig{}, ap)
}

// newTestServerFull builds the handler with both integrations configured.
func newTestServerFull(t *testing.T, cal config.CalendarConfig, ap config.AppriseConfig) (*httptest.Server, *store.Store) {
	t.Helper()
	loc, err := time.LoadLocation("Australia/Sydney")
	if err != nil {
		t.Fatalf("location: %v", err)
	}
	st, err := store.Open(filepath.Join(t.TempDir(), "school.db"))
	if err != nil {
		t.Fatalf("open: %v", err)
	}
	t.Cleanup(func() { _ = st.Close() })
	if err := st.Migrate(context.Background()); err != nil {
		t.Fatalf("migrate: %v", err)
	}
	if err := st.SeedChildren(context.Background(), "Harry", "Finn"); err != nil {
		t.Fatalf("seed: %v", err)
	}

	cfg := &config.Config{
		Addr:          ":0",
		DBPath:        "test",
		SessionSecret: []byte("0123456789abcdef0123456789abcdef"),
		AdminUsername: testUser,
		AdminPassword: testPass,
		SessionTTL:    time.Hour,
		AppEnv:        "test",
		Version:       "test",
		Location:      loc,
		Calendar:      cal,
		Apprise:       ap,
	}
	am, err := auth.New(cfg.SessionSecret, cfg.SessionTTL, false, cfg.AdminUsername, "", cfg.AdminPassword)
	if err != nil {
		t.Fatalf("auth: %v", err)
	}
	srv, err := New(cfg, st, am, slog.New(slog.NewTextHandler(io.Discard, nil)))
	if err != nil {
		t.Fatalf("web: %v", err)
	}
	ts := httptest.NewServer(srv.Handler())
	t.Cleanup(ts.Close)
	return ts, st
}

// login signs in and returns an HTTP client with the session cookie.
func login(t *testing.T, ts *httptest.Server) *http.Client {
	t.Helper()
	jar, err := cookiejar.New(nil)
	if err != nil {
		t.Fatalf("jar: %v", err)
	}
	client := &http.Client{Jar: jar}

	page := getBody(t, client, ts.URL+"/login")
	token := csrfToken(t, page)
	form := url.Values{"csrf": {token}, "username": {testUser}, "password": {testPass}}
	resp, err := client.PostForm(ts.URL+"/login", form)
	if err != nil {
		t.Fatalf("login: %v", err)
	}
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusOK {
		t.Fatalf("login status = %d, want 200", resp.StatusCode)
	}
	// After login, do not follow redirects: a mutation's 303 is the assertion.
	client.CheckRedirect = func(*http.Request, []*http.Request) error {
		return http.ErrUseLastResponse
	}
	return client
}

func getBody(t *testing.T, client *http.Client, url string) string {
	t.Helper()
	resp, err := client.Get(url)
	if err != nil {
		t.Fatalf("get %s: %v", url, err)
	}
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusOK {
		t.Fatalf("get %s = %d, want 200", url, resp.StatusCode)
	}
	b, err := io.ReadAll(resp.Body)
	if err != nil {
		t.Fatalf("read: %v", err)
	}
	return string(b)
}

func csrfToken(t *testing.T, html string) string {
	t.Helper()
	m := csrfRe.FindStringSubmatch(html)
	if m == nil {
		t.Fatalf("no csrf token in page")
	}
	return m[1]
}

// TestDashboardShowsChildItems proves FR-7: the selected child's items appear,
// overdue first, and another child's items do not leak in.
func TestDashboardShowsChildItems(t *testing.T) {
	ts, st := newTestServer(t)
	ctx := context.Background()
	harry, _ := st.ChildByName(ctx, "Harry")
	finn, _ := st.ChildByName(ctx, "Finn")

	overdue := time.Date(2026, 10, 10, 9, 0, 0, 0, time.UTC)
	today := time.Now().Add(2 * time.Hour)
	if _, _, err := st.UpsertItems(ctx, harry.ID, []store.Item{
		{Source: "compass", Type: "task", Subject: "11EENG", Title: "Overdue essay", ExternalRef: "h1", DueAt: &overdue, Body: "Status: Overdue"},
		{Source: "compass", Type: "task", Subject: "11MGMA", Title: "Today chapter", ExternalRef: "h2", DueAt: &today, Body: "Status: Pending"},
	}); err != nil {
		t.Fatalf("upsert: %v", err)
	}
	if _, _, err := st.UpsertItems(ctx, finn.ID, []store.Item{
		{Source: "compass", Type: "task", Title: "Finn secret task", ExternalRef: "f1"},
	}); err != nil {
		t.Fatalf("upsert finn: %v", err)
	}

	client := login(t, ts)
	body := getBody(t, client, ts.URL+"/?child="+itoa(harry.ID))

	for _, want := range []string{
		"Overdue essay", "Today chapter", "Overdue", "Due today", "11EENG",
	} {
		if !strings.Contains(body, want) {
			t.Errorf("dashboard missing %q", want)
		}
	}
	if strings.Contains(body, "Finn secret task") {
		t.Error("Harry's dashboard leaked Finn's item")
	}
	oi := strings.Index(body, "Overdue essay")
	ti := strings.Index(body, "Today chapter")
	if oi < 0 || ti < 0 || oi > ti {
		t.Error("overdue item must render before the due-today item")
	}
}

// TestItemDetailAndDelete proves §5 screen 3 and the Delete half of FR-10.
func TestItemDetailAndDelete(t *testing.T) {
	ts, st := newTestServer(t)
	ctx := context.Background()
	harry, _ := st.ChildByName(ctx, "Harry")
	if _, _, err := st.UpsertItems(ctx, harry.ID, []store.Item{
		{Source: "compass", Type: "task", Subject: "11EENG", Teacher: "Ms Lee",
			Title: "Essay draft", Body: "Status: Overdue\nClass: Class Task", ExternalRef: "h1"},
	}); err != nil {
		t.Fatalf("upsert: %v", err)
	}
	items, _ := st.ItemsForChild(ctx, harry.ID)
	if len(items) != 1 {
		t.Fatalf("items = %d, want 1", len(items))
	}
	id := items[0].ID

	client := login(t, ts)
	detail := getBody(t, client, ts.URL+"/items/"+itoa(id))
	for _, want := range []string{"Essay draft", "11EENG", "Ms Lee", "Class Task"} {
		if !strings.Contains(detail, want) {
			t.Errorf("detail missing %q", want)
		}
	}

	resp, err := client.PostForm(ts.URL+"/items/"+itoa(id)+"/delete",
		url.Values{"csrf": {csrfToken(t, detail)}})
	if err != nil {
		t.Fatalf("delete: %v", err)
	}
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusSeeOther {
		t.Fatalf("delete status = %d, want 303", resp.StatusCode)
	}
	if got, _ := st.ItemByID(ctx, id); got != nil {
		t.Error("item survived delete")
	}

	// The delete without a CSRF token is refused.
	resp2, err := client.PostForm(ts.URL+"/items/"+itoa(id)+"/delete", url.Values{})
	if err != nil {
		t.Fatalf("delete2: %v", err)
	}
	defer resp2.Body.Close()
	if resp2.StatusCode != http.StatusForbidden {
		t.Errorf("tokenless delete = %d, want 403", resp2.StatusCode)
	}
}

// TestFailLoudlyBanner proves FR-12: no scan is shown as NO SCAN, and a failed
// scan is shown as SCAN FAILED, never as an empty day.
func TestFailLoudlyBanner(t *testing.T) {
	ts, st := newTestServer(t)
	ctx := context.Background()
	harry, _ := st.ChildByName(ctx, "Harry")
	client := login(t, ts)

	body := getBody(t, client, ts.URL+"/?child="+itoa(harry.ID))
	if !strings.Contains(body, "NO SCAN HAS RUN YET") {
		t.Error("missing NO SCAN HAS RUN YET banner")
	}
	if strings.Contains(body, "Nothing overdue.") {
		t.Error("an unscanned child must not read as 'nothing overdue'")
	}
	if !strings.Contains(body, "Unknown — the last scan did not complete.") {
		t.Error("missing the unknown empty state for a child with no scan")
	}

	if _, err := st.RecordScan(ctx, &harry.ID, 1, 0, false, "Cloudflare challenge"); err != nil {
		t.Fatalf("record: %v", err)
	}
	body = getBody(t, client, ts.URL+"/?child="+itoa(harry.ID))
	if !strings.Contains(body, "SCAN FAILED") {
		t.Error("missing SCAN FAILED banner")
	}
	if !strings.Contains(body, "Cloudflare challenge") {
		t.Error("failure message not shown")
	}

	if _, err := st.RecordScan(ctx, &harry.ID, 4, 9, true, ""); err != nil {
		t.Fatalf("record: %v", err)
	}
	body = getBody(t, client, ts.URL+"/?child="+itoa(harry.ID))
	if !strings.Contains(body, "Last scan completed.") {
		t.Error("healthy scan banner missing")
	}
	if !strings.Contains(body, "Nothing overdue.") {
		t.Error("a healthy scan should allow the quiet empty state")
	}
}

// TestSummaryBuildAndDelete proves the stored brief round-trips through the
// dashboard (FR-10 summary half).
func TestSummaryBuildAndDelete(t *testing.T) {
	ts, st := newTestServer(t)
	ctx := context.Background()
	harry, _ := st.ChildByName(ctx, "Harry")
	client := login(t, ts)

	page := getBody(t, client, ts.URL+"/?child="+itoa(harry.ID))
	resp, err := client.PostForm(ts.URL+"/summaries/build",
		url.Values{"csrf": {csrfToken(t, page)}, "child": {itoa(harry.ID)}})
	if err != nil {
		t.Fatalf("build: %v", err)
	}
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusSeeOther {
		t.Fatalf("build status = %d, want 303", resp.StatusCode)
	}
	summaries, err := st.RecentNotifications(ctx, 10)
	if err != nil || len(summaries) != 1 {
		t.Fatalf("summaries = %d, %v", len(summaries), err)
	}

	page = getBody(t, client, ts.URL+"/?child="+itoa(harry.ID))
	if !strings.Contains(page, "Harry — 0 overdue") {
		t.Errorf("brief not shown on dashboard: %s", snippet(page))
	}
	resp2, err := client.PostForm(ts.URL+"/summaries/"+itoa(summaries[0].ID)+"/delete",
		url.Values{"csrf": {csrfToken(t, page)}})
	if err != nil {
		t.Fatalf("delete: %v", err)
	}
	defer resp2.Body.Close()
	if resp2.StatusCode != http.StatusSeeOther {
		t.Fatalf("summary delete = %d, want 303", resp2.StatusCode)
	}
	if got, _ := st.NotificationByID(ctx, summaries[0].ID); got != nil {
		t.Error("summary survived delete")
	}
}

func itoa(v int64) string { return strconv.FormatInt(v, 10) }

func snippet(s string) string {
	if len(s) > 400 {
		return s[:400]
	}
	return s
}

// fakeHACalendar is a minimal Home Assistant calendar for the item-screen test.
// It records created events so a read-back can prove the write.
func fakeHACalendar(t *testing.T, failCreate bool) *httptest.Server {
	t.Helper()
	var events []map[string]any
	mux := http.NewServeMux()
	mux.HandleFunc("POST /api/services/calendar/create_event", func(w http.ResponseWriter, r *http.Request) {
		var body map[string]any
		_ = json.NewDecoder(r.Body).Decode(&body)
		if failCreate {
			w.WriteHeader(http.StatusInternalServerError)
			_ = json.NewEncoder(w).Encode(map[string]any{
				"error": map[string]any{"code": "unknown_error", "message": "calendar is busy"},
			})
			return
		}
		events = append(events, map[string]any{
			"uid": "uid-1", "summary": body["summary"], "description": body["description"],
			"start_date_time": body["start_date_time"],
		})
		_ = json.NewEncoder(w).Encode(map[string]any{
			"service_response": map[string]any{"calendar.school": map[string]any{"uid": "uid-1"}},
		})
	})
	mux.HandleFunc("POST /api/services/calendar/get_events", func(w http.ResponseWriter, r *http.Request) {
		if events == nil {
			events = []map[string]any{}
		}
		_ = json.NewEncoder(w).Encode(map[string]any{
			"service_response": map[string]any{"calendar.school": map[string]any{"events": events}},
		})
	})
	srv := httptest.NewServer(mux)
	t.Cleanup(srv.Close)
	return srv
}

// TestDashboardWarnsWhenTheCalendarIsNotConfigured proves the calendar half of
// FR-12: an unconfigured target is stated, never silently skipped.
func TestDashboardWarnsWhenTheCalendarIsNotConfigured(t *testing.T) {
	ts, _ := newTestServer(t)
	client := login(t, ts)
	body := getBody(t, client, ts.URL+"/")
	if !strings.Contains(body, "CALENDAR NOT CONFIGURED") {
		t.Errorf("dashboard does not warn about the calendar: %s", snippet(body))
	}
	if !strings.Contains(body, "SCHOOL_HA_URL") {
		t.Error("warning does not name the missing configuration")
	}
}

// TestItemCalendarPush proves the item screen writes one event and records it.
func TestItemCalendarPush(t *testing.T) {
	ha := fakeHACalendar(t, false)
	ts, st := newTestServerCalendar(t, config.CalendarConfig{
		BaseURL: ha.URL, Token: "test-token", EntityID: "calendar.school", Timeout: 5 * time.Second,
	})
	ctx := context.Background()
	harry, _ := st.ChildByName(ctx, "Harry")
	due := time.Now().Add(4 * time.Hour).UTC().Truncate(time.Second)
	if _, _, err := st.UpsertItems(ctx, harry.ID, []store.Item{{
		Source: "compass", Type: "event", Title: "End of Year Senior Music Concert - HALL",
		Body: "End of Year Senior Music Concert - HALL - KSH", DueAt: &due,
		Importance: "high", ExternalRef: "e1",
	}}); err != nil {
		t.Fatalf("upsert: %v", err)
	}
	items, _ := st.ItemsForChild(ctx, harry.ID)
	id := items[0].ID

	client := login(t, ts)
	detail := getBody(t, client, ts.URL+"/items/"+itoa(id))
	if !strings.Contains(detail, "Add to calendar") {
		t.Fatalf("item screen has no calendar action: %s", snippet(detail))
	}

	resp, err := client.PostForm(ts.URL+"/items/"+itoa(id)+"/calendar",
		url.Values{"csrf": {csrfToken(t, detail)}})
	if err != nil {
		t.Fatalf("push: %v", err)
	}
	defer resp.Body.Close()
	page, _ := io.ReadAll(resp.Body)
	if resp.StatusCode != http.StatusOK {
		t.Fatalf("push status = %d, want 200", resp.StatusCode)
	}
	if !strings.Contains(string(page), "Added to calendar.school") {
		t.Errorf("push page has no confirmation: %s", snippet(string(page)))
	}
	if !strings.Contains(string(page), "in the calendar") {
		t.Errorf("item screen does not show the calendar state: %s", snippet(string(page)))
	}

	summary, err := st.CalendarPushSummary(ctx)
	if err != nil {
		t.Fatalf("summary: %v", err)
	}
	if summary.Total != 1 || summary.Failed != 0 {
		t.Fatalf("push log = %+v", summary)
	}
	ci, _ := st.CalendarItemByID(ctx, id)
	if ci == nil || ci.HAEventUID != "uid-1" {
		t.Fatalf("item does not carry the event id: %+v", ci)
	}
}

// TestItemCalendarPushFailureIsLoud proves a failed write is shown and recorded.
func TestItemCalendarPushFailureIsLoud(t *testing.T) {
	ha := fakeHACalendar(t, true)
	ts, st := newTestServerCalendar(t, config.CalendarConfig{
		BaseURL: ha.URL, Token: "test-token", EntityID: "calendar.school", Timeout: 5 * time.Second,
	})
	ctx := context.Background()
	harry, _ := st.ChildByName(ctx, "Harry")
	due := time.Now().Add(4 * time.Hour).UTC().Truncate(time.Second)
	if _, _, err := st.UpsertItems(ctx, harry.ID, []store.Item{{
		Source: "compass", Type: "event", Title: "Year 11 Assembly - HALL",
		DueAt: &due, Importance: "high", ExternalRef: "e1",
	}}); err != nil {
		t.Fatalf("upsert: %v", err)
	}
	items, _ := st.ItemsForChild(ctx, harry.ID)
	id := items[0].ID

	client := login(t, ts)
	detail := getBody(t, client, ts.URL+"/items/"+itoa(id))
	resp, err := client.PostForm(ts.URL+"/items/"+itoa(id)+"/calendar",
		url.Values{"csrf": {csrfToken(t, detail)}})
	if err != nil {
		t.Fatalf("push: %v", err)
	}
	defer resp.Body.Close()
	page, _ := io.ReadAll(resp.Body)
	if !strings.Contains(string(page), "Calendar write failed") {
		t.Errorf("failure is not shown on the page: %s", snippet(string(page)))
	}
	if !strings.Contains(string(page), "calendar is busy") {
		t.Errorf("failure loses the reason: %s", snippet(string(page)))
	}

	summary, _ := st.CalendarPushSummary(ctx)
	if summary.Failed != 1 {
		t.Fatalf("failed write was not recorded: %+v", summary)
	}

	// The dashboard repeats the failure, so it is visible without the item page.
	body := getBody(t, client, ts.URL+"/")
	if !strings.Contains(body, "CALENDAR WRITE FAILED") {
		t.Errorf("dashboard does not show the failed write: %s", snippet(body))
	}
}

// TestItemCalendarPushNeedsCSRF proves the write is not open to a forged post.
func TestItemCalendarPushNeedsCSRF(t *testing.T) {
	ha := fakeHACalendar(t, false)
	ts, st := newTestServerCalendar(t, config.CalendarConfig{
		BaseURL: ha.URL, Token: "test-token", EntityID: "calendar.school", Timeout: 5 * time.Second,
	})
	ctx := context.Background()
	harry, _ := st.ChildByName(ctx, "Harry")
	due := time.Now().Add(4 * time.Hour).UTC()
	if _, _, err := st.UpsertItems(ctx, harry.ID, []store.Item{{
		Source: "compass", Type: "event", Title: "Concert", DueAt: &due,
		Importance: "high", ExternalRef: "e1",
	}}); err != nil {
		t.Fatalf("upsert: %v", err)
	}
	items, _ := st.ItemsForChild(ctx, harry.ID)

	client := login(t, ts)
	resp, err := client.PostForm(ts.URL+"/items/"+itoa(items[0].ID)+"/calendar", url.Values{})
	if err != nil {
		t.Fatalf("push: %v", err)
	}
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusForbidden {
		t.Fatalf("tokenless push = %d, want 403", resp.StatusCode)
	}
	summary, _ := st.CalendarPushSummary(ctx)
	if summary.Total != 0 {
		t.Errorf("a tokenless push recorded a write: %+v", summary)
	}
}

// ---------- Phase 7: Send panel and the 6:00am endpoint ----------

// testAppriseConfig is the recipient and channel set the tests use.
func testAppriseConfig(url, key, token string) config.AppriseConfig {
	return config.AppriseConfig{
		BaseURL:  url,
		Key:      key,
		Timeout:  2 * time.Second,
		Channels: []string{config.ChannelEmail, config.ChannelWhatsApp},
		Recipients: []config.Recipient{
			{Name: "Harry", TagBase: "harry"},
			{Name: "Finn", TagBase: "finn"},
			{Name: "Jo", TagBase: "joanna"},
			{Name: "Sam", TagBase: "sam"},
		},
		Parents:     []string{"Jo", "Sam"},
		NotifyToken: token,
	}
}

// fakeAppriseServer answers every notification with the given status and records
// the tags it was asked to notify.
func fakeAppriseServer(t *testing.T, status int) (*httptest.Server, *[]string) {
	t.Helper()
	var mu sync.Mutex
	var tags []string
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		var body struct {
			Tag []string `json:"tag"`
		}
		_ = json.NewDecoder(r.Body).Decode(&body)
		mu.Lock()
		tags = append(tags, strings.Join(body.Tag, ","))
		mu.Unlock()
		w.WriteHeader(status)
	}))
	t.Cleanup(srv.Close)
	return srv, &tags
}

// TestSendPanelShowsPreviewAndSends proves the Send panel (§5 screen 4): the
// page previews the brief, choosing a recipient and channel sends it, and the
// delivery is recorded against the right tag (FR-9, FR-10).
func TestSendPanelShowsPreviewAndSends(t *testing.T) {
	apSrv, tags := fakeAppriseServer(t, http.StatusOK)
	ts, st := newTestServerNotify(t, testAppriseConfig(apSrv.URL, "key1", "n8n-token"))
	ctx := context.Background()
	harry, _ := st.ChildByName(ctx, "Harry")

	client := login(t, ts)
	page := getBody(t, client, ts.URL+"/?child="+itoa(harry.ID))
	if !strings.Contains(page, "Send a brief") {
		t.Fatalf("Send panel missing: %s", snippet(page))
	}
	if !strings.Contains(page, "OVERDUE") && !strings.Contains(page, "Harry —") {
		t.Errorf("preview missing from the Send panel: %s", snippet(page))
	}

	resp, err := client.PostForm(ts.URL+"/summaries/send", url.Values{
		"csrf":      {csrfToken(t, page)},
		"scope":     {itoa(harry.ID)},
		"recipient": {"Harry"},
		"channel":   {"email"},
	})
	if err != nil {
		t.Fatalf("send: %v", err)
	}
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusSeeOther {
		t.Fatalf("send status = %d, want 303", resp.StatusCode)
	}
	if len(*tags) != 1 || (*tags)[0] != "harry_email" {
		t.Fatalf("apprise tags = %#v, want [harry_email]", *tags)
	}

	rows, err := st.RecentNotifications(ctx, 10)
	if err != nil || len(rows) != 1 {
		t.Fatalf("rows = %d, %v", len(rows), err)
	}
	got := rows[0]
	if got.Scope != "Harry" || got.Recipient != "Harry" || got.Channel != "email" || !got.OK || got.SentAt == nil {
		t.Errorf("row = %+v", got)
	}
	if !strings.Contains(got.Text, "Harry") {
		t.Errorf("stored brief = %q", got.Text)
	}

	// The dashboard reports the send back, and the banner is healthy.
	page = getBody(t, client, ts.URL+"/")
	if !strings.Contains(page, "delivered") {
		t.Errorf("dashboard does not report the send: %s", snippet(page))
	}
}

// TestSendPanelIsLoudWithoutApprise proves a missing gateway is shown, and the
// send is refused instead of being reported as sent (FR-12).
func TestSendPanelIsLoudWithoutApprise(t *testing.T) {
	ts, st := newTestServer(t)
	ctx := context.Background()
	harry, _ := st.ChildByName(ctx, "Harry")

	client := login(t, ts)
	page := getBody(t, client, ts.URL+"/?child="+itoa(harry.ID))
	if !strings.Contains(page, "NOTIFICATIONS NOT CONFIGURED") {
		t.Errorf("missing banner: %s", snippet(page))
	}

	resp, err := client.PostForm(ts.URL+"/summaries/send", url.Values{
		"csrf":      {csrfToken(t, page)},
		"scope":     {itoa(harry.ID)},
		"recipient": {"Harry"},
		"channel":   {"email"},
	})
	if err != nil {
		t.Fatalf("send: %v", err)
	}
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusSeeOther {
		t.Fatalf("status = %d, want 303 with the failure reported", resp.StatusCode)
	}
	if rows, _ := st.RecentNotifications(ctx, 10); len(rows) != 0 {
		t.Errorf("a refused send must not be recorded as delivered: %+v", rows)
	}
}

// TestSendReportsChannelFailure proves a failed channel is recorded and shown,
// never reported as a success (FR-12).
func TestSendReportsChannelFailure(t *testing.T) {
	apSrv, _ := fakeAppriseServer(t, http.StatusFailedDependency)
	ts, st := newTestServerNotify(t, testAppriseConfig(apSrv.URL, "key1", "n8n-token"))
	ctx := context.Background()
	harry, _ := st.ChildByName(ctx, "Harry")

	client := login(t, ts)
	page := getBody(t, client, ts.URL+"/?child="+itoa(harry.ID))
	resp, err := client.PostForm(ts.URL+"/summaries/send", url.Values{
		"csrf":      {csrfToken(t, page)},
		"scope":     {itoa(harry.ID)},
		"recipient": {"Harry"},
		"channel":   {"email", "whatsapp"},
	})
	if err != nil {
		t.Fatalf("send: %v", err)
	}
	defer resp.Body.Close()

	rows, err := st.RecentNotifications(ctx, 10)
	if err != nil || len(rows) != 2 {
		t.Fatalf("rows = %d, %v", len(rows), err)
	}
	for _, n := range rows {
		if n.OK || n.SentAt != nil || n.Error == "" {
			t.Errorf("row = %+v, want a recorded failure", n)
		}
	}
	page = getBody(t, client, ts.URL+"/")
	if !strings.Contains(page, "SEND FAILED") {
		t.Errorf("dashboard does not show the failure: %s", snippet(page))
	}
}

// TestMorningEndpoint covers the endpoint n8n calls at 6:00am: it refuses a bad
// token, refuses to run unconfigured, and delivers one brief per boy plus the
// combined brief, reporting failures as 207 (FR-9, FR-12, FR-14).
func TestMorningEndpoint(t *testing.T) {
	apSrv, tags := fakeAppriseServer(t, http.StatusOK)
	ts, st := newTestServerNotify(t, testAppriseConfig(apSrv.URL, "key1", "n8n-token"))
	ctx := context.Background()

	post := func(auth string) *http.Response {
		t.Helper()
		req, err := http.NewRequest(http.MethodPost, ts.URL+"/notify/morning", nil)
		if err != nil {
			t.Fatalf("request: %v", err)
		}
		if auth != "" {
			req.Header.Set("Authorization", "Bearer "+auth)
		}
		resp, err := http.DefaultClient.Do(req)
		if err != nil {
			t.Fatalf("post: %v", err)
		}
		return resp
	}

	resp := post("wrong")
	if resp.StatusCode != http.StatusUnauthorized {
		t.Fatalf("bad token status = %d, want 401", resp.StatusCode)
	}
	resp.Body.Close()

	// A healthy morning: both children scanned, every channel answers 200.
	for _, name := range []string{"Harry", "Finn"} {
		c, _ := st.ChildByName(ctx, name)
		if _, err := st.RecordScan(ctx, &c.ID, 4, 3, true, ""); err != nil {
			t.Fatalf("record scan: %v", err)
		}
	}

	resp = post("n8n-token")
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusOK {
		t.Fatalf("status = %d, want 200", resp.StatusCode)
	}
	var body struct {
		OK          bool     `json:"ok"`
		Channels    []string `json:"channels"`
		ScansFailed []string `json:"scans_failed"`
		Sends       []struct {
			Scope      string `json:"scope"`
			Recipients []string
			Delivered  int `json:"delivered"`
			Failed     int `json:"failed"`
		} `json:"sends"`
	}
	if err := json.NewDecoder(resp.Body).Decode(&body); err != nil {
		t.Fatalf("decode: %v", err)
	}
	if !body.OK || len(body.Sends) != 3 {
		t.Fatalf("body = %+v", body)
	}
	if len(body.ScansFailed) != 0 {
		t.Errorf("scans_failed = %#v, want none", body.ScansFailed)
	}
	if len(*tags) != 8 {
		t.Errorf("deliveries = %d, want 8 (2 boys + 2 parents, 2 channels)", len(*tags))
	}
	// The combined brief goes to both parents.
	var combined *struct {
		Scope      string `json:"scope"`
		Recipients []string
		Delivered  int `json:"delivered"`
		Failed     int `json:"failed"`
	}
	for i := range body.Sends {
		if body.Sends[i].Scope == "combined" {
			combined = &body.Sends[i]
		}
	}
	if combined == nil || len(combined.Recipients) != 2 || combined.Delivered != 4 {
		t.Errorf("combined send = %+v", combined)
	}

	rows, err := st.RecentNotifications(ctx, 20)
	if err != nil || len(rows) != 8 {
		t.Fatalf("rows = %d, %v", len(rows), err)
	}

	// A failed scan still sends the briefs, but the run is not green (FR-12).
	harry, _ := st.ChildByName(ctx, "Harry")
	if _, err := st.RecordScan(ctx, &harry.ID, 1, 0, false, "cloudflare challenge"); err != nil {
		t.Fatalf("record failed scan: %v", err)
	}
	resp = post("n8n-token")
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusMultiStatus {
		t.Fatalf("failed-scan status = %d, want 207", resp.StatusCode)
	}
	var after struct {
		OK          bool     `json:"ok"`
		ScansFailed []string `json:"scans_failed"`
	}
	if err := json.NewDecoder(resp.Body).Decode(&after); err != nil {
		t.Fatalf("decode: %v", err)
	}
	if after.OK || len(after.ScansFailed) != 1 || after.ScansFailed[0] != "Harry" {
		t.Errorf("after a failed scan = %+v", after)
	}
}

// TestMorningEndpointDisabled proves the endpoint is off, not silently
// accepting, when the token is unset.
func TestMorningEndpointDisabled(t *testing.T) {
	ts, _ := newTestServerNotify(t, testAppriseConfig("http://127.0.0.1:1", "key1", ""))
	resp, err := http.Post(ts.URL+"/notify/morning", "application/json", nil)
	if err != nil {
		t.Fatalf("post: %v", err)
	}
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusServiceUnavailable {
		t.Fatalf("status = %d, want 503", resp.StatusCode)
	}
}

// TestMorningEndpointFailsLoudly proves a failed delivery is a 207, so the n8n
// execution is not green when a brief did not go out (FR-12).
func TestMorningEndpointFailsLoudly(t *testing.T) {
	apSrv, _ := fakeAppriseServer(t, http.StatusFailedDependency)
	ts, _ := newTestServerNotify(t, testAppriseConfig(apSrv.URL, "key1", "n8n-token"))

	req, _ := http.NewRequest(http.MethodPost, ts.URL+"/notify/morning", nil)
	req.Header.Set("Authorization", "Bearer n8n-token")
	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		t.Fatalf("post: %v", err)
	}
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusMultiStatus {
		t.Fatalf("status = %d, want 207", resp.StatusCode)
	}
}

// TestMorningEndpointDryRun proves the n8n wiring can be checked without
// messaging the family: the same build path, no delivery, nothing recorded.
func TestMorningEndpointDryRun(t *testing.T) {
	apSrv, tags := fakeAppriseServer(t, http.StatusOK)
	ts, st := newTestServerNotify(t, testAppriseConfig(apSrv.URL, "key1", "n8n-token"))
	ctx := context.Background()
	for _, name := range []string{"Harry", "Finn"} {
		c, _ := st.ChildByName(ctx, name)
		if _, err := st.RecordScan(ctx, &c.ID, 4, 3, true, ""); err != nil {
			t.Fatalf("record scan: %v", err)
		}
	}

	req, _ := http.NewRequest(http.MethodPost, ts.URL+"/notify/morning?dry_run=1&channels=email,whatsapp", nil)
	req.Header.Set("Authorization", "Bearer n8n-token")
	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		t.Fatalf("post: %v", err)
	}
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusOK {
		t.Fatalf("status = %d, want 200", resp.StatusCode)
	}
	var body struct {
		DryRun bool `json:"dry_run"`
		OK     bool `json:"ok"`
		Sends  []struct {
			Scope      string   `json:"scope"`
			Recipients []string `json:"recipients"`
			Text       string   `json:"text"`
		} `json:"sends"`
	}
	if err := json.NewDecoder(resp.Body).Decode(&body); err != nil {
		t.Fatalf("decode: %v", err)
	}
	if !body.DryRun || !body.OK || len(body.Sends) != 3 {
		t.Fatalf("body = %+v", body)
	}
	if body.Sends[2].Scope != "combined" || len(body.Sends[2].Recipients) != 2 {
		t.Errorf("combined plan = %+v", body.Sends[2])
	}
	if body.Sends[0].Text == "" {
		t.Error("dry run should return the brief text")
	}
	if len(*tags) != 0 {
		t.Errorf("a dry run must not call Apprise: %#v", *tags)
	}
	if rows, _ := st.RecentNotifications(ctx, 10); len(rows) != 0 {
		t.Errorf("a dry run must not record deliveries: %+v", rows)
	}
}