<!--
Copyright 2022 DigitalOcean

This code is licensed under the MIT License.
You may obtain a copy of the License at
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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-->

<template>
    <div>
        <div v-if="!reverseProxyEnabled" class="field is-horizontal is-aligned-top">
            <div class="field-label">
                <label class="label">{{ $t('common.reverseProxy') }}</label>
            </div>
            <div class="field-body">
                <div class="field">
                    <div class="control">
                        <label class="text">
                            {{ $t('templates.globalSections.reverseProxy.reverseProxyMustBeEnabledOnOneSite') }}
                        </label>
                    </div>
                </div>
            </div>
        </div>

        <template v-else>
            <div class="field is-horizontal">
                <div class="field-label">
                    <label class="label">proxy_connect_timeout</label>
                </div>
                <div class="field-body">
                    <div class="field has-addons">
                        <div :class="`control is-expanded${proxyConnectTimeoutChanged ? ' is-changed' : ''}`">
                            <input
                                v-model.number="proxyConnectTimeout"
                                class="input"
                                type="number"
                                min="0"
                                step="1"
                                :placeholder="$props.data.proxyConnectTimeout.default"
                            />
                        </div>
                        <div class="control">
                            <a class="button is-static">
                                {{ $t('templates.globalSections.reverseProxy.seconds') }}
                            </a>
                        </div>
                    </div>
                </div>
            </div>

            <div class="field is-horizontal">
                <div class="field-label">
                    <label class="label">proxy_send_timeout</label>
                </div>
                <div class="field-body">
                    <div class="field has-addons">
                        <div :class="`control is-expanded${proxySendTimeoutChanged ? ' is-changed' : ''}`">
                            <input
                                v-model.number="proxySendTimeout"
                                class="input"
                                type="number"
                                min="0"
                                step="1"
                                :placeholder="$props.data.proxySendTimeout.default"
                            />
                        </div>
                        <div class="control">
                            <a class="button is-static">
                                {{ $t('templates.globalSections.reverseProxy.seconds') }}
                            </a>
                        </div>
                    </div>
                </div>
            </div>

            <div class="field is-horizontal">
                <div class="field-label">
                    <label class="label">proxy_read_timeout</label>
                </div>
                <div class="field-body">
                    <div class="field has-addons">
                        <div :class="`control is-expanded${proxyReadTimeoutChanged ? ' is-changed' : ''}`">
                            <input
                                v-model.number="proxyReadTimeout"
                                class="input"
                                type="number"
                                min="0"
                                step="1"
                                :placeholder="$props.data.proxyReadTimeout.default"
                            />
                        </div>
                        <div class="control">
                            <a class="button is-static">
                                {{ $t('templates.globalSections.reverseProxy.seconds') }}
                            </a>
                        </div>
                    </div>
                </div>
            </div>

            <div class="field is-horizontal">
                <div class="field-label">
                    <label class="label">Coexistence with X-Forwarded-*</label>
                </div>
                <div class="field-body">
                    <div class="field">
                        <div class="field">
                            <div
                                v-for="(name, value) in $props.data.proxyCoexistenceXForwarded.options"
                                :class="`control${proxyCoexistenceXForwardedChanged && value === proxyCoexistenceXForwarded ? ' is-changed' : ''}`"
                            >
                                <div class="radio">
                                    <PrettyRadio v-model="proxyCoexistenceXForwarded" :value="value" class="p-default p-round p-fill p-icon">
                                        {{ $t(name) }}
                                    </PrettyRadio>
                                </div>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </template>
    </div>
</template>

<script>
    import delegatedFromDefaults from '../../util/delegated_from_defaults';
    import computedFromDefaults from '../../util/computed_from_defaults';
    import PrettyRadio from '../inputs/radio';

    const defaults = {
        proxyConnectTimeout: {
            default: 60,
            computed: '60s', // We use a watcher to append 's'
            enabled: false,
        },
        proxySendTimeout: {
            default: 60,
            computed: '60s', // We use a watcher to append 's'
            enabled: false,
        },
        proxyReadTimeout: {
            default: 60,
            computed: '60s', // We use a watcher to append 's'
            enabled: false,
        },
        proxyCoexistenceXForwarded: {
            default: 'passOn',
            options: {
                passOn: 'templates.globalSections.reverseProxy.passOn', // i18n key
                remove: 'templates.globalSections.reverseProxy.remove', // i18n key
            },
            enabled: false,
        },
    };

    const validTimeout = data => {
        let val = parseFloat(data.computed);

        // Use default if we've got an invalid setting
        if (isNaN(val)) {
            val = data.default;
        }

        // Set the value with 's' appended
        data.computed = `${val}s`;
    };

    export default {
        name: 'GlobalReverseProxy',                                 // Component name
        display: 'common.reverseProxy',                             // Display name for tab (i18n key)
        key: 'reverseProxy',                                        // Key for data in parent
        delegated: delegatedFromDefaults(defaults),                 // Data the parent will present here
        components: {
            PrettyRadio,
        },
        props: {
            data: Object,                                           // Data delegated back to us from parent
        },
        data() {
            return {
                reverseProxyEnabled: false,
            };
        },
        computed: computedFromDefaults(defaults, 'reverseProxy'),   // Getters & setters for the delegated data
        watch: {
            // Disable all options if Reverse proxy is disabled
            '$parent.$parent.$data.domains': {
                handler(data) {
                    for (const domain of data) {
                        if (domain && domain.reverseProxy && domain.reverseProxy.reverseProxy
                            && domain.reverseProxy.reverseProxy.computed) {
                            this.$data.reverseProxyEnabled = true;
                            this.$props.data.proxyConnectTimeout.enabled = true;
                            this.$props.data.proxyConnectTimeout.computed = this.$props.data.proxyConnectTimeout.value;
                            this.$props.data.proxySendTimeout.enabled = true;
                            this.$props.data.proxySendTimeout.computed = this.$props.data.proxySendTimeout.value;
                            this.$props.data.proxyReadTimeout.enabled = true;
                            this.$props.data.proxyReadTimeout.computed = this.$props.data.proxyReadTimeout.value;
                            this.$props.data.proxyCoexistenceXForwarded.enabled = true;
                            this.$props.data.proxyCoexistenceXForwarded.computed = this.$props.data.proxyCoexistenceXForwarded.value;
                            return;
                        }
                    }

                    this.$data.reverseProxyEnabled = false;
                    this.$props.data.proxyConnectTimeout.enabled = false;
                    this.$props.data.proxyConnectTimeout.computed = '';
                    this.$props.data.proxySendTimeout.enabled = false;
                    this.$props.data.proxySendTimeout.computed = '';
                    this.$props.data.proxyReadTimeout.enabled = false;
                    this.$props.data.proxyReadTimeout.computed = '';
                    this.$props.data.proxyCoexistenceXForwarded.enabled = false;
                    this.$props.data.proxyCoexistenceXForwarded.computed = '';
                },
                deep: true,
            },
            // Ensure the timeouts are valid numbers
            '$props.data.proxyConnectTimeout': {
                handler: validTimeout,
                deep: true,
            },
            '$props.data.proxySendTimeout': {
                handler: validTimeout,
                deep: true,
            },
            '$props.data.proxyReadTimeout': {
                handler: validTimeout,
                deep: true,
            },
        },
    };
</script>
