import type { Id, ITrackable } from '../listing';
import { UntypedFormGroup } from '@angular/forms';
import { forOwn, has, isEqual, isPlainObject, transform } from 'lodash-es';
import dayjs, { type Dayjs } from 'dayjs';
import { inject } from '@angular/core';
import { ActivatedRoute } from '@angular/router';

export function capitalize(value: string | String): string {
    if (!value) {
        return '';
    }
    return value.charAt(0).toUpperCase() + value.slice(1);
}

export function humanize(value: string, lowercase = true): string {
    if (!value) {
        return '';
    }

    const words = (lowercase ? value.toLowerCase() : value).split(/[ \-_]+/);
    return words.map(capitalize).join(' ');
}

export function humanizeCamelCase(value: string): string {
    return value.replace(/([a-z])([A-Z])/g, '$1 $2').toLowerCase();
}

export function escapeHtml<T extends unknown | string>(unsafe: T, options?: { ignoreTags: string[] }) {
    if (typeof unsafe !== 'string') {
        return unsafe;
    }

    let _unsafe = unsafe as string;

    const ignoredTags = options?.ignoreTags?.reduce(
        (acc, tag) => ({
            ...acc,
            [`<${tag}>`]: `???${tag};`,
            [`</${tag}>`]: `???/${tag};`,
        }),
        {} as Record<string, string>,
    );

    Object.entries(ignoredTags ?? {}).forEach(([key, value]) => {
        _unsafe = _unsafe.replaceAll(key, value);
    });

    let escaped = _unsafe
        .replaceAll(/&/g, '&amp;')
        .replaceAll(/ /g, '&nbsp;')
        .replaceAll(/</g, '&lt;')
        .replaceAll(/>/g, '&gt;')
        .replaceAll(/"/g, '&quot;');

    if (ignoredTags) {
        Object.entries(ignoredTags).forEach(([key, value]) => {
            escaped = escaped.replaceAll(value, key);
        });
    }

    return escaped;
}

export function _log(value: unknown, message = '') {
    console.log(`%c[${dayjs().format('mm:ss.SSS')}] ${message}`, 'color: yellow;', value);
}

export function toNumber(str: string): number {
    try {
        return parseInt(`${str}`.replace(/\D/g, ''), 10);
    } catch (e) {
        return 0;
    }
}

export function randomString() {
    return Math.random().toString(36).substring(2, 9);
}

export function isJustOne<T>(list: T[]): list is [T] {
    return list.length === 1;
}

export function isToday(date: string | Date | Dayjs) {
    return dayjs(date).isSame(new Date(), 'day');
}

export function trackByFactory<T extends ITrackable<PrimaryKey>, PrimaryKey extends Id = T['id']>() {
    return (_index: number, item: T): Id => item.id;
}

export function hasFormChanged(form: UntypedFormGroup, initialFormValue: Record<string, string | number | boolean>): boolean {
    if (!form || !initialFormValue) {
        return false;
    }

    for (const key of Object.keys(form.getRawValue())) {
        const initialValue = initialFormValue[key];
        const updatedValue = form.get(key)?.value;

        if (initialValue === null && updatedValue !== null) {
            const updatedValueType = typeof updatedValue;
            if (updatedValueType !== 'string' && updatedValueType !== 'boolean') {
                return true;
            } else if (updatedValueType === 'string' && updatedValue.length > 0) {
                return true;
            } else if (updatedValueType === 'boolean' && updatedValue === true) {
                return true;
            }
        } else if (initialValue !== updatedValue) {
            if (Array.isArray(updatedValue)) {
                if (JSON.stringify(initialValue) !== JSON.stringify(updatedValue)) {
                    return true;
                }
            } else if (updatedValue instanceof dayjs && typeof initialValue === 'string') {
                if (!(updatedValue as Dayjs).isSame(dayjs(initialValue), 'day')) {
                    return true;
                }
            } else if (updatedValue instanceof Date && dayjs(initialValue as any).isValid()) {
                if (!dayjs(updatedValue).isSame(dayjs(initialValue as any), 'day')) {
                    return true;
                }
            } else {
                return true;
            }
        }
    }

    return false;
}

const HOURS_IN_A_DAY = 24;
const MINUTES_IN_AN_HOUR = 60;

export function getLeftDateTime(ISOString: string) {
    const date = dayjs(ISOString);
    const now = new Date(Date.now());

    const daysLeft = date.diff(now, 'days');
    const hoursFromNow = date.diff(now, 'hours');
    const hoursLeft = hoursFromNow - HOURS_IN_A_DAY * daysLeft;
    const minutesFromNow = date.diff(now, 'minutes');
    const minutesLeft = minutesFromNow - HOURS_IN_A_DAY * MINUTES_IN_AN_HOUR * daysLeft;

    return { daysLeft, hoursLeft, minutesLeft };
}

export function deepDiffObj(base: Record<string, unknown>, object: Record<string, unknown>) {
    if (!object) {
        throw new Error(`The object compared should be an object: ${object}`);
    }

    if (!base) {
        return object;
    }

    const res = transform(object, (result: Record<string, unknown>, value: any, key: string) => {
        if (!has(base, key)) {
            result[key] = value;
        } // fix edge case: not defined to explicitly defined as undefined
        if (!isEqual(value, base[key])) {
            result[key] =
                isPlainObject(value) && isPlainObject(base[key])
                    ? deepDiffObj(base[key] as Record<string, unknown>, value as Record<string, unknown>)
                    : value;
        }
    });
    // map removed fields to undefined
    forOwn(base, (_value: any, key: string) => {
        if (!has(object, key)) {
            res[key] = undefined;
        }
    });

    return res;
}

export function bool(value: unknown): boolean {
    if (typeof value !== 'string') {
        return Boolean(value);
    }

    const _value = value.toLowerCase().trim();
    if (_value === 'true') {
        return true;
    }

    if (_value === 'false') {
        return false;
    }

    return Boolean(_value);
}

export function groupBy<T, Q>(array: T[], predicate: (value: T, index: number, items: T[]) => Q) {
    return array.reduce((dict, value, index, items) => {
        const key = predicate(value, index, items);
        if (dict.has(key)) {
            const group = dict.get(key);
            if (!group) {
                throw new Error(`Oh, why, group ${key} is undefined`);
            }
            group.push(value);
            return dict;
        }
        return dict.set(key, [value]);
    }, new Map<Q, T[]>());
}

declare global {
    interface String {
        capitalize(): string;
    }

    interface Array<T> {
        /**
         * Returns a new array with all falsy values removed.
         * The values false, null, 0, "", undefined, and NaN are considered falsy.
         * @param and - Additional function that is called for each truthy element in the array.
         * The value returned from the function determines whether the element is kept or removed.
         */
        filterTruthy(and?: (value: T) => boolean): T[];

        groupBy<Key>(condition: (value: T) => Key): Map<Key, T[]>;
    }

    interface Console {
        /**
         * Logs a beautifully formatted message to the console.
         * @param value - The object to log.
         * @param message - Additional message.
         */
        write(value: unknown, message?: string): void;
    }
}

console.write = _log;

String.prototype.capitalize = function _capitalize(this: string): string {
    return capitalize(this);
};

Array.prototype.filterTruthy = function <T>(this: T[], predicate: (value: T) => boolean = () => true): T[] {
    return this.filter(value => !!value && predicate(value));
};

Array.prototype.groupBy = function <T, Key>(this: T[], condition: (value: T) => Key): Map<Key, T[]> {
    return groupBy(this, condition);
};

/**
 * Use this in field initialization or in constructor of a service / component
 * @param param
 * @param route
 */
export function getParam(param: string, route = inject(ActivatedRoute)): string | null {
    if (route.snapshot.paramMap.has(param)) {
        return route.snapshot.paramMap.get(param);
    }
    if (route.parent) {
        return getParam(param, route.parent);
    }
    return null;
}