// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// 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 <http://www.gnu.org/licenses/>.

package cmd

import (
	"reflect"
	"testing"
)

func TestParseMetaData(t *testing.T) {
	metaDataCases := []struct {
		input  string
		output map[string]string
		err    error
		status bool
	}{
		// success scenario using ; as delimiter
		{"key1=value1;key2=value2", map[string]string{"Key1": "value1", "Key2": "value2"}, nil, true},
		// success scenario using ; as delimiter
		{"key1=m1=m2,m3=m4;key2=value2", map[string]string{"Key1": "m1=m2,m3=m4", "Key2": "value2"}, nil, true},
		// success scenario using = more than once
		{"Cache-Control=max-age=90000,min-fresh=9000;key1=value1;key2=value2", map[string]string{"Cache-Control": "max-age=90000,min-fresh=9000", "Key1": "value1", "Key2": "value2"}, nil, true},
		// using different delimiter, other than '=' between key value
		{"key1:value1;key2:value2", nil, ErrInvalidMetadata, false},
		// using no delimiter
		{"key1:value1:key2:value2", nil, ErrInvalidMetadata, false},
		// success: use value in quotes
		{"Content-Disposition='form-data; name=\"description\"'", map[string]string{"Content-Disposition": "form-data; name=\"description\""}, nil, true},
		// success: use value in double quotes
		{"Content-Disposition=\"form-data; name='description'\"", map[string]string{"Content-Disposition": "form-data; name='description'"}, nil, true},
		// fail: unterminated quote
		{"Content-Disposition='form-data; name=\"description\"", nil, ErrInvalidMetadata, false},
		// fail: unterminated double quote
		{"Content-Disposition=\"form-data; name='description'", nil, ErrInvalidMetadata, false},
		// success: use value and key in quotes
		{"\"Content-Disposition\"='form-data; name=\"description\"'", map[string]string{"Content-Disposition": "form-data; name=\"description\""}, nil, true},
		// success: use value and key in quotes
		{"\"Content=Disposition;Other key part=this is also key data\"='form-data; name=\"description\"'", map[string]string{"Content=Disposition;Other key part=this is also key data": "form-data; name=\"description\""}, nil, true},
	}

	for idx, testCase := range metaDataCases {
		metaDatamap, errMeta := getMetaDataEntry(testCase.input)
		if testCase.status == true {
			if errMeta != nil {
				t.Fatalf("Test %d: generated error not matching, expected = `%s`, found = `%s`", idx+1, testCase.err, errMeta)
			}
			if !reflect.DeepEqual(metaDatamap, testCase.output) {
				t.Fatalf("Test %d: generated Map not matching, expected = `%s`, found = `%s`", idx+1, testCase.input, metaDatamap)
			}
		}

		if testCase.status == false {
			if !reflect.DeepEqual(metaDatamap, testCase.output) {
				t.Fatalf("Test %d: generated Map not matching, expected = `%s`, found = `%s`", idx+1, testCase.input, metaDatamap)
			}
			if errMeta.Cause.Error() != testCase.err.Error() {
				t.Fatalf("Test %d: generated error not matching, expected = `%s`, found = `%s`", idx+1, testCase.err, errMeta)
			}
		}
	}
}
