package glpi

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

func TestOAuthAndGetTicket(t *testing.T) {
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		switch r.URL.Path {
		case "/api.php/token":
			json.NewEncoder(w).Encode(map[string]any{"access_token": "x", "expires_in": 3600})
		case "/api.php/v2.3/Assistance/Ticket/5":
			json.NewEncoder(w).Encode(map[string]any{"id": 5, "name": "Hello", "category": map[string]any{"id": 2}, "status": map[string]any{"id": 1}})
		default:
			http.NotFound(w, r)
		}
	}))
	defer srv.Close()
	c := New(srv.URL, "v2.3", "cid", "sec", "u", "p", time.Second)
	got, err := c.GetTicket(context.Background(), 5)
	if err != nil {
		t.Fatal(err)
	}
	if got.ID != 5 || got.CategoryID != 2 {
		t.Fatalf("unexpected %+v", got)
	}
}

func TestValidateContractAcceptsVersionPrefixedOpenAPIPaths(t *testing.T) {
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		switch r.URL.Path {
		case "/api.php/token":
			_ = json.NewEncoder(w).Encode(map[string]any{"access_token": "x", "expires_in": 3600})
		case "/api.php/doc.json":
			_ = json.NewEncoder(w).Encode(map[string]any{"paths": map[string]any{
				"/v2.3/Assistance/Ticket":                        map[string]any{"get": map[string]any{}},
				"/v2.3/Assistance/Ticket/{id}":                   map[string]any{"get": map[string]any{}, "patch": map[string]any{}},
				"/v2.3/Assistance/Ticket/{id}/Timeline/Followup": map[string]any{"get": map[string]any{}, "post": map[string]any{}},
				"/v2.3/Dropdowns/ITILCategory":                   map[string]any{"get": map[string]any{}},
			}})
		default:
			http.NotFound(w, r)
		}
	}))
	defer srv.Close()
	c := New(srv.URL, "v2.3", "cid", "sec", "u", "p", time.Second)
	if err := c.ValidateContract(context.Background()); err != nil {
		t.Fatal(err)
	}
}

func TestDiscoverAndListKnowledgeBase(t *testing.T) {
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		switch r.URL.Path {
		case "/api.php/token":
			_ = json.NewEncoder(w).Encode(map[string]any{"access_token": "x", "expires_in": 3600})
		case "/api.php/doc.json":
			_ = json.NewEncoder(w).Encode(map[string]any{"paths": map[string]any{
				"/v2.3/Knowledge/KnowbaseItem": map[string]any{"get": map[string]any{}},
			}})
		case "/api.php/v2.3/Knowledge/KnowbaseItem":
			_ = json.NewEncoder(w).Encode([]map[string]any{{
				"id": 7, "name": "Konto gesperrt", "answer": "<p>Konto entsperren</p>", "date_mod": "2026-07-27 10:00:00",
				"categories": []any{map[string]any{"id": 4}},
			}})
		default:
			http.NotFound(w, r)
		}
	}))
	defer srv.Close()
	c := New(srv.URL, "v2.3", "cid", "sec", "u", "p", time.Second)
	path, err := c.DiscoverKnowledgeBasePath(context.Background(), "auto")
	if err != nil {
		t.Fatal(err)
	}
	if path != "/Knowledge/KnowbaseItem" {
		t.Fatalf("path=%q", path)
	}
	items, err := c.ListKnowledgeBaseItems(context.Background(), path, 50, "")
	if err != nil {
		t.Fatal(err)
	}
	if len(items) != 1 || items[0].ID != 7 || len(items[0].CategoryIDs) != 1 || items[0].CategoryIDs[0] != 4 {
		t.Fatalf("unexpected items: %+v", items)
	}
}

func TestAddFollowupPreservesRichHTML(t *testing.T) {
	var gotContent string
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		switch r.URL.Path {
		case "/api.php/token":
			_ = json.NewEncoder(w).Encode(map[string]any{"access_token": "x", "expires_in": 3600})
		case "/api.php/v2.3/Assistance/Ticket/5/Timeline/Followup":
			var body map[string]any
			if err := json.NewDecoder(r.Body).Decode(&body); err != nil {
				t.Fatal(err)
			}
			gotContent, _ = body["content"].(string)
			w.WriteHeader(http.StatusCreated)
			_, _ = w.Write([]byte(`{}`))
		default:
			http.NotFound(w, r)
		}
	}))
	defer srv.Close()
	c := New(srv.URL, "v2.3", "cid", "sec", "u", "p", time.Second)
	rich := `<p><strong>Fett</strong></p><ul><li>Eintrag</li></ul><p><a href="https://example.invalid">Link</a></p>`
	if err := c.AddFollowup(context.Background(), 5, rich, true); err != nil {
		t.Fatal(err)
	}
	if gotContent != rich {
		t.Fatalf("rich HTML changed:\nwant %s\n got %s", rich, gotContent)
	}
}

func TestAddFollowupEscapesPlainText(t *testing.T) {
	var gotContent string
	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		switch r.URL.Path {
		case "/api.php/token":
			_ = json.NewEncoder(w).Encode(map[string]any{"access_token": "x", "expires_in": 3600})
		case "/api.php/v2.3/Assistance/Ticket/5/Timeline/Followup":
			var body map[string]any
			if err := json.NewDecoder(r.Body).Decode(&body); err != nil {
				t.Fatal(err)
			}
			gotContent, _ = body["content"].(string)
			w.WriteHeader(http.StatusCreated)
			_, _ = w.Write([]byte(`{}`))
		default:
			http.NotFound(w, r)
		}
	}))
	defer srv.Close()
	c := New(srv.URL, "v2.3", "cid", "sec", "u", "p", time.Second)
	if err := c.AddFollowup(context.Background(), 5, "Hallo <b>nicht HTML</b>\nZeile 2", false); err != nil {
		t.Fatal(err)
	}
	want := "<p>Hallo &lt;b&gt;nicht HTML&lt;/b&gt;<br>Zeile 2</p>"
	if gotContent != want {
		t.Fatalf("plain content not escaped:\nwant %s\n got %s", want, gotContent)
	}
}