<template>
    <form-wrapper :title="$t('twofaccounts.forms.edit_account')">
        <form @submit.prevent="updateAccount" @keydown="form.onKeydown($event)">
            <!-- service -->
            <form-field :isDisabled="form.otp_type === 'steamtotp'" :form="form" fieldName="service" inputType="text" :label="$t('twofaccounts.service')" :placeholder="$t('twofaccounts.forms.service.placeholder')" autofocus />
            <!-- account -->
            <form-field :form="form" fieldName="account" inputType="text" :label="$t('twofaccounts.account')" :placeholder="$t('twofaccounts.forms.account.placeholder')" />
            <!-- icon upload -->
            <label class="label">{{ $t('twofaccounts.icon') }}</label>
            <div class="field is-grouped">
                <!-- i'm lucky button -->
                <div class="control" v-if="$root.appSettings.getOfficialIcons">
                    <v-button @click="fetchLogo" :color="'is-dark'" :nativeType="'button'" :isDisabled="form.service.length < 3">
                        <span class="icon is-small">
                            <font-awesome-icon :icon="['fas', 'globe']" />
                        </span>
                        <span>{{ $t('twofaccounts.forms.i_m_lucky') }}</span>
                    </v-button>
                </div>
                <!-- upload button -->
                <div class="control">
                    <div class="file is-dark">
                        <label class="file-label">
                            <input class="file-input" type="file" accept="image/*" v-on:change="uploadIcon" ref="iconInput">
                            <span class="file-cta">
                                <span class="file-icon">
                                    <font-awesome-icon :icon="['fas', 'upload']" />
                                </span>
                                <span class="file-label">{{ $t('twofaccounts.forms.choose_image') }}</span>
                            </span>
                        </label>
                        <span class="tag is-black is-large" v-if="tempIcon">
                            <img class="icon-preview" :src="'/storage/icons/' + tempIcon" :alt="$t('twofaccounts.icon_to_illustrate_the_account')">
                            <button class="delete is-small" @click.prevent="deleteIcon" :aria-label="$t('twofaccounts.remove_icon')"></button>
                        </span>
                    </div>
                </div>
            </div>
            <div class="field">
                <field-error :form="form" field="icon" class="help-for-file" />
                <p class="help" v-html="$t('twofaccounts.forms.i_m_lucky_legend')"></p>
            </div>
            <!-- otp type -->
            <form-toggle class="has-uppercased-button" :isDisabled="true" :form="form" :choices="otp_types" fieldName="otp_type" :label="$t('twofaccounts.forms.otp_type.label')" :help="$t('twofaccounts.forms.otp_type.help')" :hasOffset="true" />
            <div v-if="form.otp_type">
                <!-- secret -->
                <label :for="this.inputId('text','secret')" class="label" v-html="$t('twofaccounts.forms.secret.label')"></label>
                <div class="field has-addons">
                    <p v-if="!secretIsLocked" class="control">
                        <span class="select">
                            <select @change="form.secret=''" v-model="secretIsBase32Encoded">
                                <option v-for="(format)  in secretFormats" :key="format.value" :value="format.value">{{ format.text }}</option>
                            </select>
                        </span>
                    </p>
                    <p class="control is-expanded">
                        <input :id="this.inputId('text','secret')" class="input" type="text" v-model="form.secret" :disabled="secretIsLocked">
                    </p>
                    <p class="control" v-if="secretIsLocked">
                        <a class="button is-dark field-lock" @click="secretIsLocked = false" :title="$t('twofaccounts.forms.unlock.title')">
                            <span class="icon">
                                <font-awesome-icon :icon="['fas', 'lock']" />
                            </span>
                        </a>
                    </p>
                    <p class="control" v-else>
                        <a class="button is-dark field-unlock"  @click="secretIsLocked = true" :title="$t('twofaccounts.forms.lock.title')">
                            <span class="icon has-text-danger">
                                <font-awesome-icon :icon="['fas', 'lock-open']" />
                            </span>
                        </a>
                    </p>
                </div>
                <div class="field">
                    <field-error :form="form" field="secret" class="help-for-file" />
                    <p class="help" v-html="$t('twofaccounts.forms.secret.help')"></p>
                </div>
                <div v-if="form.otp_type !== 'steamtotp'">
                    <h2 class="title is-4 mt-5 mb-2">{{ $t('commons.options') }}</h2>
                    <p class="help mb-4">
                        {{ $t('twofaccounts.forms.options_help') }}
                    </p>
                    <!-- digits -->
                    <form-toggle :form="form" :choices="digitsChoices" fieldName="digits" :label="$t('twofaccounts.forms.digits.label')" :help="$t('twofaccounts.forms.digits.help')" />
                    <!-- algorithm -->
                    <form-toggle :form="form" :choices="algorithms" fieldName="algorithm" :label="$t('twofaccounts.forms.algorithm.label')" :help="$t('twofaccounts.forms.algorithm.help')" />
                    <!-- TOTP period -->
                    <form-field v-if="form.otp_type === 'totp'" :form="form" fieldName="period" inputType="text" :label="$t('twofaccounts.forms.period.label')" :placeholder="$t('twofaccounts.forms.period.placeholder')" :help="$t('twofaccounts.forms.period.help')" />
                    <!-- HOTP counter -->
                    <div v-if="form.otp_type === 'hotp'">
                        <div class="field" style="margin-bottom: 0.5rem;">
                            <label class="label">{{ $t('twofaccounts.forms.counter.label') }}</label>
                        </div>
                        <div class="field has-addons">
                            <div class="control is-expanded">
                                <input class="input" type="text" placeholder="" v-model="form.counter" :disabled="counterIsLocked" />
                            </div>
                            <div class="control" v-if="counterIsLocked">
                                <a class="button is-dark field-lock" @click="counterIsLocked = false" :title="$t('twofaccounts.forms.unlock.title')">
                                    <span class="icon">
                                        <font-awesome-icon :icon="['fas', 'lock']" />
                                    </span>
                                </a>
                            </div>
                            <div class="control" v-else>
                                <a class="button is-dark field-unlock"  @click="counterIsLocked = true" :title="$t('twofaccounts.forms.lock.title')">
                                    <span class="icon has-text-danger">
                                        <font-awesome-icon :icon="['fas', 'lock-open']" />
                                    </span>
                                </a>
                            </div>
                        </div>
                        <field-error :form="form" field="counter" />
                        <p class="help" v-html="$t('twofaccounts.forms.counter.help_lock')"></p>
                    </div>
                </div>
            </div>
            <!-- form buttons -->
            <vue-footer :showButtons="true">
                <p class="control">
                    <v-button :isLoading="form.isBusy" class="is-rounded" >{{ $t('commons.save') }}</v-button>
                </p>
                <p class="control" v-if="form.otp_type && form.secret">
                    <button type="button" class="button is-success is-rounded" @click="previewAccount">{{ $t('twofaccounts.forms.test') }}</button>
                </p>
                <p class="control">
                    <button type="button" class="button is-text is-rounded" @click="cancelCreation">{{ $t('commons.cancel') }}</button>
                </p>
            </vue-footer>
        </form>
        <!-- modal -->
        <modal v-model="ShowTwofaccountInModal">
            <otp-displayer ref="AdvancedFormOtpDisplayer" v-bind="form.data()" @increment-hotp="incrementHotp" @validation-error="mapDisplayerErrors">
            </otp-displayer>
        </modal>
    </form-wrapper>
</template>

<script>

    import Modal from '../../components/Modal'
    import Form from './../../components/Form'
    import OtpDisplayer from '../../components/OtpDisplayer'
    import Base32 from "hi-base32"

    export default {
        data() {
            return {
                ShowTwofaccountInModal : false,
                counterIsLocked: true,
                twofaccountExists: false,
                tempIcon: '',
                secretIsBase32Encoded: null,
                form: new Form({
                    service: '',
                    account: '',
                    otp_type: '',
                    uri: '',
                    icon: '',
                    secret: '',
                    algorithm: '',
                    digits: null,
                    counter: null,
                    period: null,
                    image: '',
                }),
                otp_types: [
                    { text: 'TOTP', value: 'totp' },
                    { text: 'HOTP', value: 'hotp' },
                    { text: 'STEAM', value: 'steamtotp' },
                ],
                digitsChoices: [
                    { text: 6, value: 6 },
                    { text: 7, value: 7 },
                    { text: 8, value: 8 },
                    { text: 9, value: 9 },
                    { text: 10, value: 10 },
                ],
                secretFormats: [
                    { text: this.$t('twofaccounts.forms.plain_text'), value: 0 },
                    { text: 'Base32', value: 1 }
                ],
                algorithms: [
                    { text: 'sha1', value: 'sha1' },
                    { text: 'sha256', value: 'sha256' },
                    { text: 'sha512', value: 'sha512' },
                    { text: 'md5', value: 'md5' },
                ],
                secretIsLocked: true,
            }
        },

        mounted: function () {

            // stop TOTP generation on modal close
            this.$on('modalClose', function() {

                this.$refs.AdvancedFormOtpDisplayer.stopLoop()
            });
        },

        created: function() {
            this.getAccount();
        },

        components: {
            Modal,
            OtpDisplayer,
        },

        methods: {
            async getAccount () {

                const { data } = await this.axios.get('/api/v1/twofaccounts/' + this.$route.params.twofaccountId)

                this.form.fill(data)
                this.secretIsBase32Encoded = 1
                this.twofaccountExists = true

                // set account icon as temp icon
                this.tempIcon = this.form.icon
                
            },

            async updateAccount() {

                // Set new icon and delete old one
                if( this.tempIcon !== this.form.icon ) {
                    let oldIcon = ''

                    oldIcon = this.form.icon

                    this.form.icon = this.tempIcon
                    this.tempIcon = oldIcon
                    this.deleteIcon()
                }

                // Secret to base32 if necessary
                this.form.secret = this.secretIsBase32Encoded ? this.form.secret : Base32.encode(this.form.secret).toString();

                await this.form.put('/api/v1/twofaccounts/' + this.$route.params.twofaccountId)

                if( this.form.errors.any() === false ) {
                    this.$notify({ type: 'is-success', text: this.$t('twofaccounts.account_updated') })
                    this.$router.push({name: 'accounts', params: { initialEditMode: true, toRefresh: true }})
                }

            },

            previewAccount() {
                this.$refs.AdvancedFormOtpDisplayer.show()
            },

            cancelCreation: function() {
                // clean new temp icon
                this.deleteIcon()

                this.$router.push({name: 'accounts', params: { initialEditMode: true }});
            },

            async uploadIcon(event) {

                // clean possible tempIcon but keep original one
                this.deleteIcon()

                let imgdata = new FormData();
                imgdata.append('icon', this.$refs.iconInput.files[0]);

                this.form.upload('/api/v1/icons', imgdata, {returnError: true}).then(response => {
                    this.tempIcon = response.data.filename;
                })
                .catch(error => {
                    this.$notify({type: 'is-danger', text: this.$t(error.response.data.message) })
                });
            },

            fetchLogo() {
                if (this.$root.appSettings.getOfficialIcons) {
                    this.axios.post('/api/v1/icons/default', {service: this.form.service}, {returnError: true}).then(response => {
                        if (response.status === 201) {
                            // clean possible already uploaded temp icon
                            this.deleteIcon()
                            this.tempIcon = response.data.filename;
                        }
                        else this.$notify({type: 'is-warning', text: this.$t('errors.no_logo_found_for_x', {service: this.form.service}) })
                    })
                    .catch(error => {
                        this.$notify({type: 'is-warning', text: this.$t('errors.no_logo_found_for_x', {service: this.form.service}) })
                    });
                }
            },

            deleteIcon(event) {

                if( this.tempIcon && this.tempIcon !== this.form.icon ) {
                    this.axios.delete('/api/v1/icons/' + this.tempIcon)
                }

                this.tempIcon = ''
            },

            incrementHotp(payload) {
                // The quick form or the preview feature has incremented the HOTP counter so we get the new value from
                // the component.
                // This could desynchronized the HOTP verification server and our local counter if the user never verified the HOTP but this
                // is acceptable (and HOTP counter can be edited by the way)
                this.form.counter = payload.nextHotpCounter
                this.form.uri = payload.nextUri
            },

            mapDisplayerErrors (event) {
                this.form.errors.set(this.form.extractErrors(event))
            }

        },

    }
</script>