import { createDateField } from '../../index.js';
import { areAllDaysBetweenValid, dateStore, getAnnouncer, getDefaultDate, getFirstSegment, isBefore, isBeforeOrSame, } from '../../internal/helpers/date/index.js';
import { addMeltEventListener, makeElement, createElHelpers, effect, executeCallbacks, omit, overridable, sleep, styleToString, toWritableStores, } from '../../internal/helpers/index.js';
import { withGet } from '../../internal/helpers/withGet.js';
import { derived, writable } from 'svelte/store';
import { generateIds } from '../../internal/helpers/id.js';
import { removeDescriptionElement } from './_internal/helpers.js';
const defaults = {
    isDateUnavailable: undefined,
    value: undefined,
    hourCycle: undefined,
    locale: 'en',
    granularity: undefined,
    hideTimeZone: false,
    defaultValue: {
        start: undefined,
        end: undefined,
    },
    startName: undefined,
    endName: undefined,
    disabled: false,
    readonly: false,
    readonlySegments: undefined,
    minValue: undefined,
    maxValue: undefined,
};
const { name } = createElHelpers('dateField');
const rangeFieldIdParts = ['field', 'label', 'description', 'validation'];
export function createDateRangeField(props) {
    const withDefaults = { ...defaults, ...props };
    const options = toWritableStores(omit(withDefaults, 'value', 'placeholder'));
    const generatedIds = generateIds(rangeFieldIdParts);
    const ids = toWritableStores({ ...generatedIds, ...withDefaults.ids });
    const defaultDate = getDefaultDate({
        defaultValue: withDefaults.defaultValue?.start,
        defaultPlaceholder: withDefaults.defaultPlaceholder,
        granularity: withDefaults.granularity,
    });
    const valueWritable = withDefaults.value ?? writable(withDefaults.defaultValue);
    const value = overridable(valueWritable, withDefaults.onValueChange);
    const startValue = withGet.writable(value.get()?.start ?? withDefaults.defaultValue?.start);
    const endValue = withGet.writable(value.get()?.end ?? withDefaults.defaultValue?.end);
    const isCompleted = derived(value, ($value) => {
        return $value?.start && $value?.end;
    });
    const placeholderWritable = withDefaults.placeholder ?? writable(withDefaults.defaultPlaceholder ?? defaultDate);
    const placeholder = dateStore(overridable(placeholderWritable, withDefaults.onPlaceholderChange), withDefaults.defaultPlaceholder ?? defaultDate);
    const startField = createDateField({
        ...omit(withDefaults, 'defaultValue', 'onValueChange', 'startName', 'endName', 'readonlySegments'),
        value: startValue,
        name: withDefaults.startName,
        readonlySegments: withDefaults.readonlySegments?.start,
        ids: {
            ...generatedIds,
            ...withDefaults.ids,
            ...withDefaults.startIds,
        },
    });
    const endField = createDateField({
        ...omit(withDefaults, 'defaultValue', 'onValueChange', 'endName', 'startName', 'readonlySegments'),
        value: endValue,
        name: withDefaults.endName,
        readonlySegments: withDefaults.readonlySegments?.end,
        ids: {
            ...generatedIds,
            ...withDefaults.ids,
            ...withDefaults.endIds,
        },
    });
    const { elements: { segment: startSegment, hiddenInput: startHiddenInput }, states: { isInvalid: isStartInvalid, segmentContents: startSegmentContents, segmentValues: startSegmentValues, }, options: { name: startName }, } = startField;
    const { elements: { segment: endSegment, hiddenInput: endHiddenInput }, states: { isInvalid: isEndInvalid, segmentContents: endSegmentContents, segmentValues: endSegmentValues, }, options: { name: endName }, } = endField;
    const isInvalid = derived([value, isStartInvalid, isEndInvalid, options.isDateUnavailable], ([$value, $isStartInvalid, $isEndInvalid, $isDateUnavailable]) => {
        if ($isStartInvalid || $isEndInvalid) {
            return true;
        }
        if (!$value?.start || !$value?.end) {
            return false;
        }
        if (!isBeforeOrSame($value?.start, $value?.end)) {
            return true;
        }
        if ($isDateUnavailable !== undefined) {
            const allValid = areAllDaysBetweenValid($value?.start, $value?.end, $isDateUnavailable, undefined);
            if (!allValid) {
                return true;
            }
        }
        return false;
    });
    const label = makeElement(name('label'), {
        stores: [isInvalid, options.disabled, ids.label],
        returned: ([$isInvalid, $disabled, $labelId]) => {
            return {
                id: $labelId,
                'data-invalid': $isInvalid ? '' : undefined,
                'data-disabled': $disabled ? '' : undefined,
            };
        },
        action: (node) => {
            const unsub = executeCallbacks(addMeltEventListener(node, 'click', () => {
                const firstSegment = getFirstSegment(ids.field.get());
                if (!firstSegment)
                    return;
                sleep(1).then(() => firstSegment.focus());
            }), addMeltEventListener(node, 'mousedown', (e) => {
                if (!e.defaultPrevented && e.detail > 1) {
                    e.preventDefault();
                }
            }));
            return {
                destroy: unsub,
            };
        },
    });
    const fieldIdDeps = derived([ids.field, ids.label, ids.description, ids.validation], ([$fieldId, $labelId, $descriptionId, $validationId]) => {
        return {
            field: $fieldId,
            label: $labelId,
            description: $descriptionId,
            validation: $validationId,
        };
    });
    const field = makeElement(name('field'), {
        stores: [isCompleted, isInvalid, fieldIdDeps],
        returned: ([$isCompleted, $isInvalid, $ids]) => {
            const describedBy = $isCompleted
                ? `${$ids.description}${$isInvalid ? ` ${$ids.validation}` : ''}`
                : `${$ids.description}`;
            return {
                role: 'group',
                id: $ids.field,
                'aria-labelledby': $ids.label,
                'aria-describedby': describedBy,
                'data-invalid': $isInvalid ? '' : undefined,
            };
        },
        action: () => {
            getAnnouncer();
            return {
                destroy() {
                    removeDescriptionElement(ids.description.get());
                },
            };
        },
    });
    const validation = makeElement(name('validation'), {
        stores: [isInvalid, ids.validation],
        returned: ([$isInvalid, $validationId]) => {
            const validStyle = styleToString({
                display: 'none',
            });
            return {
                id: $validationId,
                'data-invalid': $isInvalid ? '' : undefined,
                style: $isInvalid ? undefined : validStyle,
            };
        },
    });
    /**
     * Combine the `startSegmentContents` and `endSegmentContents` stores
     * into a single store that can be used to render the contents of the
     * date range field.
     *
     * Since contents are generated automatically based on the locale
     * and granularity props, this is not a writable store. If you wish
     * to control the contents of the field, you should use the
     * `startSegmentValues` and `endSegmentValues` stores returned
     * from this builder instead.
     */
    const segmentContents = derived([startSegmentContents, endSegmentContents], ([$startSegmentContents, $endSegmentContents]) => {
        return {
            start: $startSegmentContents,
            end: $endSegmentContents,
        };
    });
    /**
     * Synchronize the `value` store with the individual `startValue`
     * and `endValue` stores that are used by the individual date fields.
     *
     * We only want to update the `value` store when both the `startValue`
     * and `endValue` stores are not `undefined`. This is because the
     * `value` store is used to determine if the date field is completed,
     * and we don't want to mark the date field as completed until both
     * the start and end dates have been selected.
     */
    effect([value], ([$value]) => {
        const $startValue = startValue.get();
        const $endValue = endValue.get();
        if ($value?.start && $value?.end) {
            if ($value.start !== $startValue) {
                startValue.set($value.start);
            }
            if ($value.end !== $endValue) {
                endValue.set($value.end);
            }
            return;
        }
    });
    effect([startValue, endValue], ([$startValue, $endValue]) => {
        const $value = value.get();
        if ($value && $value?.start === $startValue && $value?.end === $endValue)
            return;
        if ($startValue && $endValue) {
            value.update((prev) => {
                if (prev?.start === $startValue && prev?.end === $endValue) {
                    return prev;
                }
                return {
                    start: $startValue,
                    end: $endValue,
                };
            });
        }
        else if ($value && $value?.start && $value?.end) {
            value.set({
                start: undefined,
                end: undefined,
            });
        }
    });
    effect([options.disabled], ([$disabled]) => {
        startField.options.disabled.set($disabled);
        endField.options.disabled.set($disabled);
    });
    effect([options.readonly], ([$readonly]) => {
        startField.options.readonly.set($readonly);
        endField.options.readonly.set($readonly);
    });
    effect([options.readonlySegments], ([$readonlySegments]) => {
        startField.options.readonlySegments.set($readonlySegments?.start);
        endField.options.readonlySegments.set($readonlySegments?.end);
    });
    effect([options.minValue], ([$minValue]) => {
        startField.options.minValue.set($minValue);
        endField.options.minValue.set($minValue);
    });
    effect([options.maxValue], ([$maxValue]) => {
        startField.options.maxValue.set($maxValue);
        endField.options.maxValue.set($maxValue);
    });
    effect([options.granularity], ([$granularity]) => {
        startField.options.granularity.set($granularity);
        endField.options.granularity.set($granularity);
    });
    effect([options.hideTimeZone], ([$hideTimeZone]) => {
        startField.options.hideTimeZone.set($hideTimeZone);
        endField.options.hideTimeZone.set($hideTimeZone);
    });
    effect([options.hourCycle], ([$hourCycle]) => {
        startField.options.hourCycle.set($hourCycle);
        endField.options.hourCycle.set($hourCycle);
    });
    effect([options.locale], ([$locale]) => {
        startField.options.locale.set($locale);
        endField.options.locale.set($locale);
    });
    return {
        elements: {
            field,
            label,
            startSegment,
            endSegment,
            startHiddenInput,
            endHiddenInput,
            validation,
        },
        states: {
            value,
            placeholder: placeholder.toWritable(),
            segmentContents,
            endSegmentValues,
            startSegmentValues,
            isInvalid,
        },
        options: {
            ...options,
            endName,
            startName,
        },
        ids: {
            field: ids,
            start: startField.ids,
            end: endField.ids,
        },
    };
}