// Vikunja is a to-do list application to facilitate your life.
// Copyright 2018-present Vikunja and contributors. All rights reserved.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

package webtests

import (
	"encoding/json"
	"fmt"
	"net/http"
	"testing"

	"code.vikunja.io/api/pkg/models"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

// TestTaskDuplicateV2 covers POST /tasks/{projecttask}/duplicate. It drives the
// Echo+Huma stack directly (humaRequest/humaTokenFor) because webHandlerTestV2's
// buildURL only models base[/{id}] paths, not action sub-paths.
func TestTaskDuplicateV2(t *testing.T) {
	t.Run("duplicates an accessible task", func(t *testing.T) {
		e, err := setupTestEnv()
		require.NoError(t, err)
		token := humaTokenFor(t, &testuser1)

		// Task 2 lives in project 1, which testuser1 owns.
		const sourceTaskID int64 = 2
		rec := humaRequest(t, e, http.MethodPost, "/api/v2/tasks/2/duplicate", ``, token, "")
		require.Equal(t, http.StatusCreated, rec.Code, "body: %s", rec.Body.String())
		assert.Contains(t, rec.Body.String(), `"duplicated_task"`)
		assert.Contains(t, rec.Body.String(), `"title":"task #2 done"`)

		// A returned original task would also pass the title check above; assert a new id.
		var resp struct {
			DuplicatedTask struct {
				ID int64 `json:"id"`
			} `json:"duplicated_task"`
		}
		require.NoError(t, json.Unmarshal(rec.Body.Bytes(), &resp))
		assert.NotZero(t, resp.DuplicatedTask.ID, "duplicated task should have an id")
		assert.NotEqual(t, sourceTaskID, resp.DuplicatedTask.ID, "duplicated task must have a new id, not the source task's")
	})

	t.Run("nonexistent source task", func(t *testing.T) {
		e, err := setupTestEnv()
		require.NoError(t, err)
		token := humaTokenFor(t, &testuser1)

		rec := humaRequest(t, e, http.MethodPost, "/api/v2/tasks/99999/duplicate", `{}`, token, "")
		// Missing source task yields ErrTaskDoesNotExist (404), not the 403 of the permission cases below.
		require.Equal(t, http.StatusNotFound, rec.Code, "body: %s", rec.Body.String())

		// v1's TestTaskDuplicate asserts the specific domain error code
		// (ErrCodeTaskDoesNotExist) here. v2 carries that code as the numeric
		// `code` field of the RFC 9457 problem+json body, so assert on it to
		// keep 1:1 parity with v1 rather than only checking the 404 status.
		assert.Contains(t, rec.Body.String(), fmt.Sprintf(`"code":%d`, models.ErrCodeTaskDoesNotExist), "body must surface ErrCodeTaskDoesNotExist; body: %s", rec.Body.String())
	})

	t.Run("no read on source task is forbidden", func(t *testing.T) {
		e, err := setupTestEnv()
		require.NoError(t, err)
		// testuser15 cannot read task 1 (project 1, owned by testuser1).
		token := humaTokenFor(t, &testuser15)

		rec := humaRequest(t, e, http.MethodPost, "/api/v2/tasks/1/duplicate", `{}`, token, "")
		require.Equal(t, http.StatusForbidden, rec.Code, "body: %s", rec.Body.String())
	})

	t.Run("read but no write on source project is forbidden", func(t *testing.T) {
		e, err := setupTestEnv()
		require.NoError(t, err)
		// Task 32 lives in project 3, on which testuser1 has read-only access:
		// CanRead passes, CanUpdate on the project fails, so CanCreate denies.
		token := humaTokenFor(t, &testuser1)

		rec := humaRequest(t, e, http.MethodPost, "/api/v2/tasks/32/duplicate", `{}`, token, "")
		require.Equal(t, http.StatusForbidden, rec.Code, "body: %s", rec.Body.String())
	})
}
