package handlers_test

import (
	"html"
	"net/http"
	"net/url"
	"strings"
	"testing"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
	"sneak.berlin/go/webhooker/internal/database"
)

// TestHandleTargetCreate_EveryType adds a target of each type. Each
// submission carries a url: only the http and slack types store one.
func TestHandleTargetCreate_EveryType(t *testing.T) {
	t.Parallel()

	env := setupSourceTest(t)

	// fields is the rest of each submission, as a query string.
	cases := []struct {
		targetType  database.TargetType
		fields      string
		wantConfig  string
		wantRetries int
	}{
		{
			database.TargetTypeHTTP, "timeout=12&max_retries=3",
			`{"url":"` + editOriginalURL + `","timeout":12}`, 3,
		},
		{
			database.TargetTypeSlack, "max_retries=4",
			`{"webhookUrl":"` + editOriginalURL + `"}`, 4,
		},
		{
			database.TargetTypeDatabase, "expiry=720h",
			`{"expiry":"720h"}`, 0,
		},
		{database.TargetTypeLog, "", "", 0},
	}

	for _, tc := range cases {
		t.Run(string(tc.targetType), func(t *testing.T) {
			t.Parallel()

			webhook := seedWebhookWithRetention(t, env.db, 30)

			form, err := url.ParseQuery(tc.fields)
			require.NoError(t, err)
			form.Set("name", "every-type")
			form.Set("type", string(tc.targetType))
			form.Set("url", editOriginalURL)

			w := serveTarget(
				env, http.MethodPost,
				"/hook/"+webhook.ID+"/targets", form,
			)
			require.Equal(t, http.StatusSeeOther, w.Code, w.Body.String())

			targets := targetsForWebhook(t, env.db, webhook.ID)
			require.Len(t, targets, 1)
			assert.Equal(t, tc.targetType, targets[0].Type)
			assert.Equal(t, tc.wantRetries, targets[0].MaxRetries)

			if tc.wantConfig == "" {
				assert.Empty(t, targets[0].Config)
			} else {
				assert.JSONEq(t, tc.wantConfig, targets[0].Config)
			}
		})
	}
}

// TestHandleTargetCreate_RefusedFormComesBack refuses a target of each
// type and checks that the webhook page comes back with the add target
// form open on that type, the values entered, and the reason.
func TestHandleTargetCreate_RefusedFormComesBack(t *testing.T) {
	t.Parallel()

	env := setupSourceTest(t)

	// fields is what the operator typed, as a query string.
	cases := []struct {
		targetType database.TargetType
		fields     string
		reason     string
	}{
		{
			database.TargetTypeHTTP,
			"name=private&url=" + editBlockedURL +
				"&timeout=12&max_retries=3",
			"Invalid target URL",
		},
		{
			database.TargetTypeSlack, "name=no-url&max_retries=4",
			"Webhook URL is required for Slack targets",
		},
		{
			database.TargetTypeDatabase, "name=archive&expiry=7d",
			"Invalid archive expiry",
		},
		{database.TargetTypeLog, "name=", "Name is required"},
	}

	for _, tc := range cases {
		t.Run(string(tc.targetType), func(t *testing.T) {
			t.Parallel()

			webhook := seedWebhookWithRetention(t, env.db, 30)

			typed, err := url.ParseQuery(tc.fields)
			require.NoError(t, err)

			form := url.Values{}
			form.Set("type", string(tc.targetType))

			for field := range typed {
				form.Set(field, typed.Get(field))
			}

			w := serveTarget(
				env, http.MethodPost,
				"/hook/"+webhook.ID+"/targets", form,
			)
			assert.Equal(t, http.StatusBadRequest, w.Code)

			page := w.Body.String()
			assert.Contains(
				t, page, `data-type="`+string(tc.targetType)+`"`,
			)
			assert.Contains(t, page, html.EscapeString(tc.reason))

			// Each value comes back in a data attribute of the targets
			// section named after its field (max_retries as
			// data-max-retries), except url, which comes back in
			// data-destination; templates/source_detail.html says why.
			for field := range typed {
				attr := "data-" + strings.ReplaceAll(field, "_", "-")
				if field == "url" {
					attr = "data-destination"
				}

				assert.Contains(
					t, page, attr+`="`+
						html.EscapeString(typed.Get(field))+`"`,
				)
			}

			assert.Empty(t, targetsForWebhook(t, env.db, webhook.ID))
		})
	}
}