it-tools/src/tools/bip39-generator/bip39-generator.vue

<template>
    <div>
        <n-card>
            <n-grid cols="3" x-gap="12">
                <n-gi span="1">
                    <n-form-item label="Language:">
                        <n-select v-model:value="language"
                            :options="Object.keys(languages).map(label => ({ label, value: label }))" />
                    </n-form-item>
                </n-gi>
                <n-gi span="2">
                    <n-form-item label="Entropy (seed):" :feedback="entropyValidation.message"
                        :validation-status="entropyValidation.status">
                        <n-input-group>
                            <n-input v-model:value="entropy" placeholder="Your string..." />
                            <n-button @click="refreshEntropy">
                                <n-icon size="22">
                                    <Refresh />
                                </n-icon>
                            </n-button>
                            <n-button @click="copyEntropy">
                                <n-icon size="22">
                                    <Copy />
                                </n-icon>
                            </n-button>
                        </n-input-group>

                    </n-form-item>
                </n-gi>
            </n-grid>
            <br>
            <n-form-item label="Passphrase (mnemonic):" :feedback="mnemonicValidation.message"
                :validation-status="mnemonicValidation.status">
                <n-input-group>
                    <n-input style="text-align: center; flex: 1;" v-model:value="passphrase"
                        placeholder="Your mnemonic..." autocomplete="off" autocorrect="off" autocapitalize="off"
                        spellcheck="false" />

                    <n-button @click="copyPassphrase">
                        <n-icon size="22" :component="Copy" />
                    </n-button>
                </n-input-group>
            </n-form-item>
        </n-card>
    </div>
</template>

<script setup lang="ts">
import { useCopy } from '@/composable/copy';
import { ref, computed } from 'vue'
import {
    entropyToMnemonic,
    englishWordList,
    chineseSimplifiedWordList,
    chineseTraditionalWordList,
    czechWordList,
    frenchWordList,
    italianWordList,
    japaneseWordList,
    koreanWordList,
    portugueseWordList,
    spanishWordList,
    generateEntropy,
    mnemonicToEntropy
} from '@it-tools/bip39'
import { Copy, Refresh } from '@vicons/tabler'
import { useValidation } from '@/composable/validation';


const languages = {
    'English': englishWordList,
    'Chinese simplified': chineseSimplifiedWordList,
    'Chinese traditional': chineseTraditionalWordList,
    'Czech': czechWordList,
    'French': frenchWordList,
    'Italian': italianWordList,
    'Japanese': japaneseWordList,
    'Korean': koreanWordList,
    'Portuguese': portugueseWordList,
    'Spanish': spanishWordList
}

const entropy = ref(generateEntropy())
const passphraseInput = ref('')

const language = ref<keyof typeof languages>('English')
const passphrase = computed({
    get() {
        try {
            return entropyToMnemonic(entropy.value, languages[language.value])
        } catch (_) {
            return passphraseInput.value
        }
    },
    set(value: string) {
        passphraseInput.value = value

        try {
            entropy.value = mnemonicToEntropy(value, languages[language.value])
        } catch (_) {
            entropy.value = ''
        }
    }
})

const entropyValidation = useValidation({
    source: entropy,
    rules: [
        {
            validator: (value) => value === '' || (value.length <= 32 && value.length >= 16 && value.length % 4 === 0),
            message: 'Entropy length should be >= 16, <= 32 and be a multiple of 4'
        },
        {
            validator: (value) => /^[a-fA-f0-9]?$/.test(value),
            message: 'Entropy should an hexadecimal number'
        }
    ]
})

const mnemonicValidation = useValidation({
    source: passphrase,
    rules: [
        {
            validator: (value) => {
                try {
                    mnemonicToEntropy(value)
                    return true
                } catch (_) {
                    return false
                }
            },
            message: 'Invalid mnemonic'
        }
    ]
})


function refreshEntropy() {
    entropy.value = generateEntropy()
}

const { copy: copyEntropy } = useCopy({ source: entropy, text: 'Entropy copied to the clipboard' })
const { copy: copyPassphrase } = useCopy({ source: passphrase, text: 'Passphrase copied to the clipboard' })

</script>

<style lang="scss" scoped>
</style>