package api

import (
	"context"
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"testing"

	"github.com/go-chi/chi/v5"

	"git.fabledsword.com/bvandeusen/minstrel/internal/auth"
	"git.fabledsword.com/bvandeusen/minstrel/internal/db/dbq"
)

func getAdminSummary(t *testing.T, h *handlers, user dbq.User) (int, adminSummaryView) {
	t.Helper()
	r := chi.NewRouter()
	r.Route("/api/admin", func(admin chi.Router) {
		admin.Use(auth.RequireAdmin())
		admin.Get("/summary", h.handleGetAdminSummary)
	})
	w := httptest.NewRecorder()
	r.ServeHTTP(w, withUser(httptest.NewRequest(http.MethodGet, "/api/admin/summary", nil), user))
	var out adminSummaryView
	if w.Code == http.StatusOK {
		if err := json.Unmarshal(w.Body.Bytes(), &out); err != nil {
			t.Fatal(err)
		}
	}
	return w.Code, out
}

// The summary counts each queue an admin acts on and says since when the
// oldest item has waited; an empty queue has no since (#5605).
func TestAdminSummary_CountsTheQueuesAndSinceWhen(t *testing.T) {
	h, _ := testHandlers(t)
	admin := seedUser(t, h.pool, "admin", "pw", true)
	listener := seedUser(t, h.pool, "listener", "pw", false)
	ctx := context.Background()

	code, empty := getAdminSummary(t, h, admin)
	if code != http.StatusOK {
		t.Fatalf("status = %d", code)
	}
	if empty.Requests.Count != 0 || empty.Requests.Since != nil || empty.Missing.Count != 0 {
		t.Errorf("empty summary = %+v", empty)
	}

	if _, err := dbq.New(h.pool).CreateRequest(ctx, dbq.CreateRequestParams{
		UserID: listener.ID, Kind: dbq.RequestKindArtist, ArtistMbid: "a0000000-0000-4000-8000-000000000001",
		ArtistName: "Annadale",
	}); err != nil {
		t.Fatal(err)
	}
	_, got := getAdminSummary(t, h, admin)
	if got.Requests.Count != 1 || got.Requests.Since == nil {
		t.Errorf("requests = %+v, want 1 with a since", got.Requests)
	}

	if code, _ := getAdminSummary(t, h, listener); code != http.StatusForbidden {
		t.Errorf("a listener got %d, want 403", code)
	}
}

// Duplicates count what needs review: a cross-release group is kept and
// linked by the resolver and waits on nobody (operator, 2026-10-19: the
// headline said 3,479 when 536 needed review).
func TestAdminSummary_DuplicatesCountOnlyWhatNeedsReview(t *testing.T) {
	h, _ := testHandlers(t)
	truncateLibrary(t, h.pool)
	admin := seedUser(t, h.pool, "dupsum-admin", "pw", true)
	ctx := context.Background()
	a := seedQuarantineTrack(t, h, "dupsum-a")
	b := seedQuarantineTrack(t, h, "dupsum-b")
	for _, g := range []struct{ key, class string }{{"dupsum-review", "review"}, {"dupsum-cross", "cross_release"}} {
		var id [16]byte
		if err := h.pool.QueryRow(ctx,
			`INSERT INTO duplicate_groups (member_key, tier, class) VALUES ($1, 'acoustic', $2) RETURNING id`,
			g.key, g.class).Scan(&id); err != nil {
			t.Fatal(err)
		}
		if _, err := h.pool.Exec(ctx, `INSERT INTO duplicate_group_members (group_id, track_id) VALUES ($1, $2), ($1, $3)`,
			id, a.ID, b.ID); err != nil {
			t.Fatal(err)
		}
	}
	_, got := getAdminSummary(t, h, admin)
	if got.Duplicates.Count != 1 {
		t.Errorf("duplicates = %d, want 1: the cross-release group needs nobody", got.Duplicates.Count)
	}
}