package api

import (
	"bytes"
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"testing"
	"time"

	"dana/internal/onec"
)

func TestOnecPushEndpoints(t *testing.T) {
	app := &API{
		onecHook: "test-secret-key",
		onec:     onec.New("", "test-secret-key", "X-Api-Key"),
	}

	mux := app.Routes()

	// 1. Unauthorized request
	req := httptest.NewRequest(http.MethodGet, "/api/v1/onec/appointments/pending", nil)
	w := httptest.NewRecorder()
	mux.ServeHTTP(w, req)
	if w.Code != http.StatusUnauthorized {
		t.Fatalf("expected 401 unauthorized, got %d", w.Code)
	}

	// 2. Authorized check with invalid body
	req = httptest.NewRequest(http.MethodPost, "/api/v1/onec/sync/all", bytes.NewReader([]byte("{invalid-json")))
	req.Header.Set("X-Api-Key", "test-secret-key")
	w = httptest.NewRecorder()
	mux.ServeHTTP(w, req)
	if w.Code != http.StatusBadRequest {
		t.Fatalf("expected 400 bad request, got %d", w.Code)
	}

	// 3. FindSlotBounds test
	now := time.Now()
	slots := []onec.Slot{
		{Start: now.Add(time.Hour), End: now.Add(2 * time.Hour)},
		{Start: now, End: now.Add(30 * time.Minute)},
		{Start: now.Add(3 * time.Hour), End: now.Add(4 * time.Hour)},
	}
	minT, maxT := findSlotBounds(slots)
	if !minT.Equal(now) {
		t.Errorf("expected minT = %v, got %v", now, minT)
	}
	if !maxT.Equal(now.Add(4 * time.Hour)) {
		t.Errorf("expected maxT = %v, got %v", now.Add(4*time.Hour), maxT)
	}
}

func TestOnecConfirmBadID(t *testing.T) {
	app := &API{
		onecHook: "test-secret-key",
	}
	mux := app.Routes()

	body, _ := json.Marshal(confirmAppointmentReq{OnecAppointmentID: "001"})
	req := httptest.NewRequest(http.MethodPost, "/api/v1/onec/appointments/invalid-id/confirm", bytes.NewReader(body))
	req.Header.Set("X-Api-Key", "test-secret-key")
	w := httptest.NewRecorder()
	mux.ServeHTTP(w, req)
	if w.Code != http.StatusBadRequest {
		t.Fatalf("expected 400 bad id, got %d", w.Code)
	}
}

func TestPushMergesDuplicateSlotsConservatively(t *testing.T) {
	start := time.Now().UTC()
	end := start.Add(time.Hour)
	free := onec.Slot{DoctorID: "d", BranchID: "b", Start: start, End: end, Status: "free"}
	busy := free
	busy.Status = "busy"
	for _, slots := range [][]onec.Slot{{free, busy}, {busy, free}} {
		got := mergeOnecSlots(slots)
		if len(got) != 1 || got[0].Status != "busy" {
			t.Fatalf("busy duplicate lost: %+v", got)
		}
	}
}