package httputil

import (
	"net/http"
	"net/http/httptest"
	"testing"
)

func TestRequireMethod(t *testing.T) {
	tests := []struct {
		name           string
		requestMethod  string
		requiredMethod string
		wantOk         bool
		wantStatus     int
	}{
		{"POST matches POST", http.MethodPost, http.MethodPost, true, 0},
		{"GET matches GET", http.MethodGet, http.MethodGet, true, 0},
		{"GET doesn't match POST", http.MethodGet, http.MethodPost, false, http.StatusMethodNotAllowed},
		{"POST doesn't match GET", http.MethodPost, http.MethodGet, false, http.StatusMethodNotAllowed},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			req := httptest.NewRequest(tt.requestMethod, "/", nil)
			w := httptest.NewRecorder()

			ok := RequireMethod(w, req, tt.requiredMethod)

			if ok != tt.wantOk {
				t.Errorf("RequireMethod() = %v, want %v", ok, tt.wantOk)
			}

			if !ok && w.Code != tt.wantStatus {
				t.Errorf("RequireMethod() status = %d, want %d", w.Code, tt.wantStatus)
			}
		})
	}
}

func TestRequirePost(t *testing.T) {
	t.Run("POST request allowed", func(t *testing.T) {
		req := httptest.NewRequest(http.MethodPost, "/", nil)
		w := httptest.NewRecorder()

		if !RequirePost(w, req) {
			t.Error("RequirePost() should return true for POST request")
		}
	})

	t.Run("GET request rejected", func(t *testing.T) {
		req := httptest.NewRequest(http.MethodGet, "/", nil)
		w := httptest.NewRecorder()

		if RequirePost(w, req) {
			t.Error("RequirePost() should return false for GET request")
		}
		if w.Code != http.StatusMethodNotAllowed {
			t.Errorf("RequirePost() status = %d, want %d", w.Code, http.StatusMethodNotAllowed)
		}
	})
}

func TestRequireGet(t *testing.T) {
	t.Run("GET request allowed", func(t *testing.T) {
		req := httptest.NewRequest(http.MethodGet, "/", nil)
		w := httptest.NewRecorder()

		if !RequireGet(w, req) {
			t.Error("RequireGet() should return true for GET request")
		}
	})

	t.Run("POST request rejected", func(t *testing.T) {
		req := httptest.NewRequest(http.MethodPost, "/", nil)
		w := httptest.NewRecorder()

		if RequireGet(w, req) {
			t.Error("RequireGet() should return false for POST request")
		}
		if w.Code != http.StatusMethodNotAllowed {
			t.Errorf("RequireGet() status = %d, want %d", w.Code, http.StatusMethodNotAllowed)
		}
	})
}