// Copyright 2025 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package wycheproof

import (
	"encoding/json"
	"testing"

	c2spwycheproof "github.com/c2sp/wycheproof"
)

// Notes represents the notes field of the top level
// object in a Wycheproof JSON file.
type Notes struct {
	BugType     string   `json:"bugType"`
	Description string   `json:"description"`
	Effect      string   `json:"effect"`
	CVEs        []string `json:"cves"`
	Links       []string `json:"links"`
}

// Suite represents the common elements of the top level
// object in a Wycheproof JSON file. Implementations should embed
// SuiteV1 in a struct that strongly types the testGroups
// field.
//
// See v1_test.go for an example.
type Suite struct {
	Algorithm     string           `json:"algorithm"`
	NumberOfTests int              `json:"numberOfTests"`
	Notes         map[string]Notes `json:"notes"`
}

// Group represents the common elements of a testGroups
// object in a Wycheproof suite. Implementations should embed
// WycheproofGroup in a struct that strongly types its list of cases.
//
// See v1_test.go for an example.
type Group struct {
	Type string `json:"type"`
}

// Case represents the common elements of a tests object
// in a Wycheproof group. Implementation should embed WycheproofCase
// in a struct that contains fields specific to the test type.
//
// See v1_test.go for an example.
type Case struct {
	CaseID  int      `json:"tcId"`
	Comment string   `json:"comment"`
	Result  string   `json:"result"`
	Flags   []string `json:"flags"`
}

// PopulateSuiteV1 opens filename from the Wycheproof testvectors_v1 test
// vectors directory and populates suite with the decoded JSON data.
func PopulateSuiteV1(t *testing.T, suite any, filename string) {
	t.Helper()
	f, err := c2spwycheproof.TestVectors.Open(filename)
	if err != nil {
		t.Fatalf("failed to open file %s: %s", filename, err)
	}
	parser := json.NewDecoder(f)
	if err := parser.Decode(suite); err != nil {
		t.Fatalf("failed to decode file %s: %s", filename, err)
	}
}