package api

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

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

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

func newAdminScanRouter(h *handlers) chi.Router {
	r := chi.NewRouter()
	r.Route("/api/admin", func(admin chi.Router) {
		admin.Use(auth.RequireAdmin())
		admin.Get("/scan/status", h.handleGetScanStatus)
		admin.Post("/scan/run", h.handleTriggerScan)
	})
	return r
}

func TestAdminScanStatus_NoRowReturnsEmpty(t *testing.T) {
	if os.Getenv("MINSTREL_TEST_DATABASE_URL") == "" {
		t.Skip("MINSTREL_TEST_DATABASE_URL not set")
	}
	h, pool := testHandlers(t)
	admin := seedUser(t, pool, "rootscan", "pw", true)
	req := httptest.NewRequest(http.MethodGet, "/api/admin/scan/status", nil)
	req = withUser(req, admin)
	rec := httptest.NewRecorder()
	newAdminScanRouter(h).ServeHTTP(rec, req)
	if rec.Code != http.StatusOK {
		t.Fatalf("status = %d, want 200; body=%s", rec.Code, rec.Body.String())
	}
	var resp scanStatusResp
	if err := json.Unmarshal(rec.Body.Bytes(), &resp); err != nil {
		t.Fatalf("decode: %v", err)
	}
	if resp.ID != "" || resp.InFlight {
		t.Errorf("expected empty payload; got %+v", resp)
	}
}

func TestAdminScanStatus_RowReturnsValues(t *testing.T) {
	if os.Getenv("MINSTREL_TEST_DATABASE_URL") == "" {
		t.Skip("MINSTREL_TEST_DATABASE_URL not set")
	}
	h, pool := testHandlers(t)
	admin := seedUser(t, pool, "rootscan2", "pw", true)
	if _, err := pool.Exec(context.Background(), `
		INSERT INTO scan_runs (started_at, finished_at, library)
		VALUES (now() - interval '1 minute', now(), '{"scanned":10,"added":2}'::jsonb)
	`); err != nil {
		t.Fatalf("seed scan_runs: %v", err)
	}

	req := httptest.NewRequest(http.MethodGet, "/api/admin/scan/status", nil)
	req = withUser(req, admin)
	rec := httptest.NewRecorder()
	newAdminScanRouter(h).ServeHTTP(rec, req)
	if rec.Code != http.StatusOK {
		t.Fatalf("status = %d", rec.Code)
	}
	var resp scanStatusResp
	if err := json.Unmarshal(rec.Body.Bytes(), &resp); err != nil {
		t.Fatalf("decode: %v", err)
	}
	if resp.InFlight {
		t.Error("expected InFlight=false (finished_at set)")
	}
	if resp.FinishedAt == nil {
		t.Error("expected FinishedAt to be non-nil")
	}
	if len(resp.Library) == 0 {
		t.Error("expected Library jsonb to be non-empty")
	}
}

func TestAdminTriggerScan_InFlightReturns409(t *testing.T) {
	if os.Getenv("MINSTREL_TEST_DATABASE_URL") == "" {
		t.Skip("MINSTREL_TEST_DATABASE_URL not set")
	}
	h, pool := testHandlers(t)
	admin := seedUser(t, pool, "rootscan3", "pw", true)
	if _, err := pool.Exec(context.Background(), `
		INSERT INTO scan_runs (started_at) VALUES (now())
	`); err != nil {
		t.Fatalf("seed in-flight scan: %v", err)
	}

	req := httptest.NewRequest(http.MethodPost, "/api/admin/scan/run", nil)
	req = withUser(req, admin)
	rec := httptest.NewRecorder()
	newAdminScanRouter(h).ServeHTTP(rec, req)
	if rec.Code != http.StatusConflict {
		t.Fatalf("status = %d, want 409; body=%s", rec.Code, rec.Body.String())
	}
}
