<template>
    <DocSectionText v-bind="$attrs"> </DocSectionText>
    <div class="card flex justify-center">
        <Form v-slot="$form" :resolver="resolver" :initialValues="initialValues" @submit="onFormSubmit" class="flex justify-center flex-col gap-4">
            <div class="flex flex-col gap-2">
                <CascadeSelect name="city" :options="countries" optionLabel="cname" optionGroupLabel="name" :optionGroupChildren="['states', 'cities']" class="w-56" placeholder="Select a City" />
                <Message v-if="$form.city?.invalid" severity="error">{{ $form.city.errors[0]?.message }}</Message>
            </div>
            <Button type="submit" severity="secondary" class="self-center p-2">Submit</Button>
        </Form>
    </div>
    <DocSectionCode :code="code" />
</template>

<script>
import { zodResolver } from '@primevue/form/resolvers';
import { z } from 'zod';

export default {
    data() {
        return {
            initialValues: {
                city: { cname: '' }
            },
            resolver: null,
            schema: z.object({
                city: z.object({
                    cname: z.string().min(1, 'City cannot be empty.')
                })
            }),
            countries: [
                {
                    name: 'Australia',
                    code: 'AU',
                    states: [
                        {
                            name: 'New South Wales',
                            cities: [
                                { cname: 'Sydney', code: 'A-SY' },
                                { cname: 'Newcastle', code: 'A-NE' },
                                { cname: 'Wollongong', code: 'A-WO' }
                            ]
                        },
                        {
                            name: 'Queensland',
                            cities: [
                                { cname: 'Brisbane', code: 'A-BR' },
                                { cname: 'Townsville', code: 'A-TO' }
                            ]
                        }
                    ]
                },
                {
                    name: 'Canada',
                    code: 'CA',
                    states: [
                        {
                            name: 'Quebec',
                            cities: [
                                { cname: 'Montreal', code: 'C-MO' },
                                { cname: 'Quebec City', code: 'C-QU' }
                            ]
                        },
                        {
                            name: 'Ontario',
                            cities: [
                                { cname: 'Ottawa', code: 'C-OT' },
                                { cname: 'Toronto', code: 'C-TO' }
                            ]
                        }
                    ]
                },
                {
                    name: 'United States',
                    code: 'US',
                    states: [
                        {
                            name: 'California',
                            cities: [
                                { cname: 'Los Angeles', code: 'US-LA' },
                                { cname: 'San Diego', code: 'US-SD' },
                                { cname: 'San Francisco', code: 'US-SF' }
                            ]
                        },
                        {
                            name: 'Florida',
                            cities: [
                                { cname: 'Jacksonville', code: 'US-JA' },
                                { cname: 'Miami', code: 'US-MI' },
                                { cname: 'Tampa', code: 'US-TA' },
                                { cname: 'Orlando', code: 'US-OR' }
                            ]
                        },
                        {
                            name: 'Texas',
                            cities: [
                                { cname: 'Austin', code: 'US-AU' },
                                { cname: 'Dallas', code: 'US-DA' },
                                { cname: 'Houston', code: 'US-HO' }
                            ]
                        }
                    ]
                }
            ],
            code: {
                basic: `
<Form v-slot="$form" :resolver="resolver" :initialValues="initialValues" @submit="onFormSubmit" class="flex justify-center flex-col gap-4">
    <div class="flex flex-col gap-2">
        <CascadeSelect name="city" :options="countries" optionLabel="cname" optionGroupLabel="name" :optionGroupChildren="['states', 'cities']" class="w-56" placeholder="Select a City" />
        <Message v-if="$form.city?.invalid" severity="error">{{ $form.city.errors[0]?.message }}</Message>
    </div>
    <Button type="submit" severity="secondary" class="self-center p-2">Submit</Button>
</Form>
`,
                options: `
<template>
    <div class="card flex justify-center">
        <InputText type="text" v-model="value" />
    </div>
</template>

<script>
export default {
    data() {
        return {
            value: null
        }
    }
}
<\/script>

`,
                composition: `
<template>
    <div class="card flex justify-center">
        <InputText type="text" v-model="value" />
    </div>
</template>

<script setup>
import { ref } from 'vue';

const value = ref(null);
<\/script>
        `
            }
        };
    },
    mounted() {
        this.resolver = zodResolver(this.schema);
    },
    methods: {
        onFormSubmit({ valid }) {
            if (valid) {
                this.$toast.add({ severity: 'success', summary: 'Form is submitted.', life: 3000 });
            }
        }
    }
};
</script>
