<template>
    <DocSectionText v-bind="$attrs">
        <p>CascadeSelect integrates seamlessly with the <NuxtLink to="/forms">PrimeVue Forms</NuxtLink> library.</p>
    </DocSectionText>
    <div class="card flex justify-center">
        <Form v-slot="$form" :resolver="resolver" :initialValues="initialValues" @submit="onFormSubmit" class="flex justify-center flex-col gap-4">
            <div class="flex flex-col gap-1">
                <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" size="small" variant="simple">{{ $form.city.error?.message }}</Message>
            </div>
            <Button type="submit" severity="secondary" label="Submit" />
        </Form>
    </div>
    <DocSectionCode :code="code" :dependencies="{ zod: '3.23.8' }" />
</template>

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

export default {
    data() {
        return {
            initialValues: {
                city: null
            },
            resolver: zodResolver(
                z.object({
                    city: z.union([
                        z.object({
                            cname: z.string().min(1, 'City is required.')
                        }),
                        z.any().refine((val) => false, { message: 'City is required.' })
                    ])
                })
            ),
            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="$form" :resolver="resolver" :initialValues="initialValues" @submit="onFormSubmit" class="flex justify-center flex-col gap-4">
    <div class="flex flex-col gap-1">
        <CascadeSelect name="city" :options="countries" optionLabel="cname" optionGroupLabel="name" :optionGroupChildren="['states', 'cities']" class="w-56" placeholder="Select a City" />
        <Message v-if="$form.city?.invalid" severity="error" size="small" variant="simple">{{ $form.city.error?.message }}</Message>
    </div>
    <Button type="submit" severity="secondary" label="Submit" />
</Form>
`,
                options: `
<template>
    <div class="card flex justify-center">
        <Form v-slot="$form" :resolver="resolver" :initialValues="initialValues" @submit="onFormSubmit" class="flex justify-center flex-col gap-4">
            <div class="flex flex-col gap-1">
                <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" size="small" variant="simple">{{ $form.city.error?.message }}</Message>
            </div>
            <Button type="submit" severity="secondary" label="Submit" />
        </Form>
        <Toast />
    </div>
</template>

<script>
export default {
    data() {
        return {
            initialValues: {
                city: null
            },
            resolver: zodResolver(
                z.object({
                    city: z.object({
                        cname: z.string().min(1, 'City is required.')
                    })
                })
            ),
            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' }
                            ]
                        }
                    ]
                }
            ]
        };
    },
    methods: {
        onFormSubmit({ valid }) {
            if (valid) {
                this.$toast.add({ severity: 'success', summary: 'Form is submitted.', life: 3000 });
            }
        }
    }
};
<\/script>
`,
                composition: `
<template>
    <div class="card flex justify-center">
        <Form v-slot="$form" :resolver="resolver" :initialValues="initialValues" @submit="onFormSubmit" class="flex justify-center flex-col gap-4">
            <div class="flex flex-col gap-1">
                <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" size="small" variant="simple">{{ $form.city.error?.message }}</Message>
            </div>
            <Button type="submit" severity="secondary" label="Submit" />
        </Form>
        <Toast />
    </div>
</template>

<script setup>
import { ref } from "vue";
import { zodResolver } from '@primevue/form/resolvers';
import { useToast } from "primevue/usetoast";
import { z } from 'zod';

const toast = useToast();
const initialValues = ref({
    city: null
});

const resolver = ref(zodResolver(
    z.object({
        city: z.object({
            cname: z.string().min(1, 'City is required.')
        })
    })
));

const countries = ref([
    {
        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' }
                ]
            }
        ]
    }
]);

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