package api

import (
	"encoding/json"
	"net/http/httptest"
	"strings"
	"testing"
	"time"
)

func TestDecodePostRules(t *testing.T) {
	cases := []struct {
		name     string
		body     string
		wantCode int
		wantText string
	}{
		{"published news", `{"title":"День открытых дверей","html":"<p>Текст</p>","published_at":"2026-09-17","published":true}`, 200, ""},
		{"draft without text", `{"title":"Черновик","published":false}`, 200, ""},
		{"picture-only post", `{"title":"Афиша","html":"<p><img src=\"/media/a.jpg\"></p>","published":true}`, 200, ""},
		{"no title", `{"title":" ","published":false}`, 422, "заголовок"},
		{"published without text", `{"title":"Пусто","html":"<p>&nbsp;</p>","published":true}`, 422, "добавьте текст"},
		{"bad date", `{"title":"Дата","published_at":"17.09.2026"}`, 422, "ГГГГ-ММ-ДД"},
		{"bad slug", `{"title":"Адрес","slug":"новость"}`, 422, "латинские"},
		// адреса со старого сайта: хвостовой дефис, подчёркивание — запись должна сохраняться
		{"legacy slug", `{"title":"Старая","slug":"v-klinike-dana-","published":false}`, 200, ""},
		{"legacy underscore", `{"title":"Старая","slug":"lech_bol","published":false}`, 200, ""},
		{"leading dash", `{"title":"Адрес","slug":"-dana"}`, 422, "латинские"},
	}
	for _, tc := range cases {
		w := httptest.NewRecorder()
		r := httptest.NewRequest("POST", "/api/v1/admin/news", strings.NewReader(tc.body))
		_, valid := decodePost(w, r, "news")
		code := 200
		if !valid {
			code = w.Code
		}
		if code != tc.wantCode || (tc.wantText != "" && !strings.Contains(w.Body.String(), tc.wantText)) {
			t.Errorf("%s: got %d %s, want %d containing %q", tc.name, code, w.Body.String(), tc.wantCode, tc.wantText)
		}
	}
}

func TestDecodePostStoresHTMLBlockAndDate(t *testing.T) {
	w := httptest.NewRecorder()
	r := httptest.NewRequest("POST", "/", strings.NewReader(`{"title":"Статья","html":"<h2>Раздел</h2>","published_at":"2025-05-28"}`))
	in, valid := decodePost(w, r, "article")
	if !valid {
		t.Fatal(w.Body.String())
	}
	var blocks []map[string]string
	if err := json.Unmarshal(in.Blocks, &blocks); err != nil || len(blocks) != 1 || blocks[0]["html"] != "<h2>Раздел</h2>" {
		t.Errorf("blocks = %s", in.Blocks)
	}
	if in.Slug != "statya" {
		t.Errorf("slug = %s", in.Slug)
	}
	if got := in.PublishedAt.UTC().Format(time.RFC3339); got != "2025-05-28T09:00:00Z" {
		t.Errorf("published_at = %s, want midday Moscow", got)
	}

	// неизменённая дата возвращается полной меткой времени и сохраняется как есть
	w = httptest.NewRecorder()
	r = httptest.NewRequest("POST", "/", strings.NewReader(`{"title":"Статья","published_at":"2024-01-13T14:03:41+03:00"}`))
	in, _ = decodePost(w, r, "article")
	if got := in.PublishedAt.UTC().Format(time.RFC3339); got != "2024-01-13T11:03:41Z" {
		t.Errorf("kept published_at = %s", got)
	}
}

func TestDecodeVacancy(t *testing.T) {
	w := httptest.NewRecorder()
	r := httptest.NewRequest("POST", "/", strings.NewReader(`{"title":"Администратор","requirements":"- грамотная речь\r\n\r\n•  ответственность ","published":true}`))
	in, valid := decodeVacancy(w, r)
	if !valid {
		t.Fatal(w.Body.String())
	}
	if in.Requirements != "грамотная речь\nответственность" || in.Slug != "administrator" || in.Sort != 100 {
		t.Errorf("got %+v", in)
	}

	w = httptest.NewRecorder()
	r = httptest.NewRequest("POST", "/", strings.NewReader(`{"title":"Пустая","published":true}`))
	if _, valid := decodeVacancy(w, r); valid || !strings.Contains(w.Body.String(), "опишите") {
		t.Errorf("empty published vacancy accepted: %d %s", w.Code, w.Body.String())
	}
}