package guestbook_test

import (
	"database/sql"
	"net/http"
	"net/http/httptest"
	"os"
	"testing"

	"git.hatecomputers.club/hatecomputers/hatecomputers.club/api/guestbook"
	"git.hatecomputers.club/hatecomputers/hatecomputers.club/api/types"
	"git.hatecomputers.club/hatecomputers/hatecomputers.club/args"
	"git.hatecomputers.club/hatecomputers/hatecomputers.club/database"
	"git.hatecomputers.club/hatecomputers/hatecomputers.club/utils"
)

func IdContinuation(context *types.RequestContext, req *http.Request, resp http.ResponseWriter) types.ContinuationChain {
	return func(success types.Continuation, _failure types.Continuation) types.ContinuationChain {
		return success(context, req, resp)
	}
}

func setup() (*sql.DB, *types.RequestContext, func()) {
	randomDb := utils.RandomId()

	testDb := database.MakeConn(&randomDb)
	database.Migrate(testDb)

	context := &types.RequestContext{
		DBConn:       testDb,
		Args:         &args.Arguments{},
		TemplateData: &(map[string]interface{}{}),
	}

	return testDb, context, func() {
		testDb.Close()
		os.Remove(randomDb)
	}
}

func TestValidGuestbookPutsInDatabase(t *testing.T) {
	db, context, cleanup := setup()
	defer cleanup()

	entries, err := database.GetGuestbookEntries(db)
	if err != nil {
		t.Fatal(err)
	}
	if len(entries) > 0 {
		t.Errorf("expected no entries, got entries")
	}

	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		guestbook.SignGuestbookContinuation(context, r, w)(IdContinuation, IdContinuation)
	}))
	defer ts.Close()

	req := httptest.NewRequest("POST", ts.URL, nil)
	req.Form = map[string][]string{
		"name":    {"test"},
		"message": {"test"},
	}

	w := httptest.NewRecorder()
	ts.Config.Handler.ServeHTTP(w, req)

	if w.Code != http.StatusOK {
		t.Errorf("expected status code 200, got %d", w.Code)
	}

	entries, err = database.GetGuestbookEntries(db)
	if err != nil {
		t.Fatal(err)
	}

	if len(entries) != 1 {
		t.Errorf("expected 1 entry, got %d", len(entries))
	}

	if entries[0].Name != req.FormValue("name") {
		t.Errorf("expected name %s, got %s", req.FormValue("name"), entries[0].Name)
	}
}

func TestInvalidGuestbookNotFoundInDatabase(t *testing.T) {
	db, context, cleanup := setup()
	defer cleanup()

	entries, err := database.GetGuestbookEntries(db)
	if err != nil {
		t.Fatal(err)
	}
	if len(entries) > 0 {
		t.Errorf("expected no entries, got entries")
	}

	testServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		guestbook.SignGuestbookContinuation(context, r, w)(IdContinuation, IdContinuation)
	}))
	defer testServer.Close()

	reallyLongStringThatWouldTakeTooMuchSpace := "a\na\na\na\na\na\na\na\na\na\na\n"
	invalidRequests := []struct {
		name    string
		message string
	}{
		{"", "test"},
		{"test", ""},
		{"", ""},
		{"test", reallyLongStringThatWouldTakeTooMuchSpace},
	}

	for _, form := range invalidRequests {
		req := httptest.NewRequest("POST", testServer.URL, nil)
		req.Form = map[string][]string{
			"name":    {form.name},
			"message": {form.message},
		}

		responseRecorder := httptest.NewRecorder()
		testServer.Config.Handler.ServeHTTP(responseRecorder, req)

		if responseRecorder.Code != http.StatusBadRequest {
			t.Errorf("expected status code 400, got %d", responseRecorder.Code)
		}
	}

	entries, err = database.GetGuestbookEntries(db)
	if err != nil {
		t.Fatal(err)
	}

	if len(entries) != 0 {
		t.Errorf("expected 0 entries, got %d", len(entries))
	}
}