import { Observable } from "rxjs";
import { HttpHeaders } from '@angular/common/http';
import { RequestQueryParams } from '../services';
import { DebugElement } from '@angular/core';
import { Comparator, State, HttpOptionInterface, HttpOptionTextInterface, QuotaUnitInterface } from '../services';
import { QuotaUnits, StorageMultipleConstant } from '../entities/shared.const';
import { AbstractControl } from "@angular/forms";
import { isValidCron } from 'cron-validator';
/**
 * Api levels
 */
enum APILevels {
    V1 = '',
    V2 = '/v2.0'
}

/**
 * v1 base href
 */
export const V1_BASE_HREF = '/api' + APILevels.V1;

/**
 * Current base href
 */
export const CURRENT_BASE_HREF = '/api' + APILevels.V2;

/**
 * Convert the different async channels to the Promise<T> type.
 *
 **
 * template T
 *  ** deprecated param {(Observable<T> | Promise<T> | T)} async
 * returns {Promise<T>}
 */
export function toPromise<T>(async: Observable<T> | Promise<T> | T): Promise<T> {
    if (!async) {
        return Promise.reject("Bad argument");
    }

    if (async instanceof Observable) {
        let obs: Observable<T> = async;
        return obs.toPromise();
    } else {
        return Promise.resolve(async);
    }
}

export const HTTP_JSON_OPTIONS: HttpOptionInterface = {
    headers: new HttpHeaders({
        "Content-Type": 'application/json',
        "Accept": 'application/json'
    }),
    responseType: 'json'
};

export const HTTP_GET_OPTIONS: HttpOptionInterface = {
    headers: new HttpHeaders({
        "Content-Type": 'application/json',
        "Accept": 'application/json',
        "Cache-Control": 'no-cache',
        "Pragma": 'no-cache'
    }),
    responseType: 'json'
};
export const HTTP_GET_OPTIONS_OBSERVE_RESPONSE: HttpOptionInterface = {
    headers: new HttpHeaders({
        "Content-Type": 'application/json',
        "Accept": 'application/json',
        "Cache-Control": 'no-cache',
        "Pragma": 'no-cache'
    }),
    observe: 'response' as 'body',
    responseType: 'json'
};
export const HTTP_GET_OPTIONS_TEXT: HttpOptionTextInterface = {
    headers: new HttpHeaders({
        "Content-Type": 'application/json',
        "Accept": 'application/json',
        "Cache-Control": 'no-cache',
        "Pragma": 'no-cache'
    }),
    responseType: 'text'
};

export const HTTP_FORM_OPTIONS: HttpOptionInterface = {
    headers: new HttpHeaders({
        "Content-Type": 'application/x-www-form-urlencoded'
    }),
    responseType: 'json'
};

export const HTTP_GET_HEADER: HttpHeaders = new HttpHeaders({
    "Content-Type": 'application/json',
    "Accept": 'application/json',
    "Cache-Control": 'no-cache',
    "Pragma": 'no-cache'
});

export const HTTP_GET_OPTIONS_CACHE: HttpOptionInterface = {
    headers: new HttpHeaders({
        "Content-Type": 'application/json',
        "Accept": 'application/json',
        "Cache-Control": 'no-cache',
        "Pragma": 'no-cache',
    }),
    responseType: 'json'
};

export const FILE_UPLOAD_OPTION: HttpOptionInterface = {
    headers: new HttpHeaders({
        "Content-Type": 'multipart/form-data',
    }),
    responseType: 'json'
};

/**
 * Build http request options
 *
 **
 *  ** deprecated param {RequestQueryParams} params
 * returns {RequestOptions}
 */
export function buildHttpRequestOptions(params: RequestQueryParams): HttpOptionInterface {
    let reqOptions: HttpOptionInterface = {
        headers: new HttpHeaders({
            "Content-Type": 'application/json',
            "Accept": 'application/json',
            "Cache-Control": 'no-cache',
            "Pragma": 'no-cache'
        }),
        responseType: 'json',
    };
    if (params) {
        reqOptions.params = params;
    }

    return reqOptions;
}
export function buildHttpRequestOptionsWithObserveResponse(params: RequestQueryParams): HttpOptionInterface {
    let reqOptions: HttpOptionInterface = {
        headers: new HttpHeaders({
            "Content-Type": 'application/json',
            "Accept": 'application/json',
            "Cache-Control": 'no-cache',
            "Pragma": 'no-cache'
        }),
        responseType: 'json',
        observe: 'response' as 'body'
    };
    if (params) {
        reqOptions.params = params;
    }
    return reqOptions;
}



/** Button events to pass to `DebugElement.triggerEventHandler` for RouterLink event handler */
export const ButtonClickEvents = {
    left: { button: 0 },
    right: { button: 2 }
};


/** Simulate element click. Defaults to mouse left-button click event. */
export function click(el: DebugElement | HTMLElement, eventObj: any = ButtonClickEvents.left): void {
    if (el instanceof HTMLElement) {
        el.click();
    } else {
        el.triggerEventHandler('click', eventObj);
    }
}

/**
 * Comparator for fields with specific type.
 *
 */
export class CustomComparator<T> implements Comparator<T> {

    fieldName: string;
    type: string;

    constructor(fieldName: string, type: string) {
        this.fieldName = fieldName;
        this.type = type;
    }

    compare(a: { [key: string]: any | any[] }, b: { [key: string]: any | any[] }) {
        let comp = 0;
        if (a && b) {
            let fieldA, fieldB;
            for (let key of Object.keys(a)) {
                if (key === this.fieldName) {
                    fieldA = a[key];
                    fieldB = b[key];
                    break;
                } else if (typeof a[key] === 'object') {
                    let insideObject = a[key];
                    for (let insideKey in insideObject) {
                        if (insideKey === this.fieldName) {
                            fieldA = insideObject[insideKey];
                            fieldB = b[key][insideKey];
                            break;
                        }
                    }
                }
            }
            switch (this.type) {
                case "number":
                    comp = fieldB - fieldA;
                    break;
                case "date":
                    comp = new Date(fieldB).getTime() - new Date(fieldA).getTime();
                    break;
                case "string":
                    comp = fieldB.localeCompare(fieldA);
                    break;
            }
        }
        return comp;
    }
}

/**
 * The default page size
 */
export const DEFAULT_PAGE_SIZE: number = 15;

/**
 *  The default supported mime type
 */
export const DEFAULT_SUPPORTED_MIME_TYPES =
    "application/vnd.security.vulnerability.report; version=1.1, application/vnd.scanner.adapter.vuln.report.harbor+json; version=1.0";

/**
 *  the property name of vulnerability database updated time
 */
export const DATABASE_UPDATED_PROPERTY = "harbor.scanner-adapter/vulnerability-database-updated-at";
export const DATABASE_NEXT_UPDATE_PROPERTY = "harbor.scanner-adapter/vulnerability-database-next-update-at";

/**
 * The state of vulnerability scanning
 */
export const VULNERABILITY_SCAN_STATUS = {
    // front-end status
    NOT_SCANNED: "Not Scanned",
    // back-end status
    PENDING: "Pending",
    RUNNING: "Running",
    ERROR: "Error",
    STOPPED: "Stopped",
    SUCCESS: "Success",
    SCHEDULED: "Scheduled"
};
/**
 * The severity of vulnerability scanning
 */
export const VULNERABILITY_SEVERITY = {
    NEGLIGIBLE: "Negligible",
    UNKNOWN: "Unknown",
    LOW: "Low",
    MEDIUM: "Medium",
    HIGH: "High",
    CRITICAL: "Critical",
    NONE: "None"
};
/**
 * The level of vulnerability severity for comparing
 */
export const SEVERITY_LEVEL_MAP = {
    "Critical": 6,
    "High": 5,
    "Medium": 4,
    "Low": 3,
    "Negligible": 2,
    "Unknown": 1,
    "None": 0
};

/**
 * Calculate page number by state
 */
export function calculatePage(state: State): number {
    if (!state || !state.page) {
        return 1;
    }

    let pageNumber = Math.ceil((state.page.to + 1) / state.page.size);
    if (pageNumber === 0) {
        return 1;
    } else {
        return pageNumber;
    }
}

/**
 * Filter columns via RegExp
 *
 **
 *  ** deprecated param {State} state
 * returns {void}
 */
export function doFiltering<T extends { [key: string]: any | any[] }>(items: T[], state: State): T[] {
    if (!items || items.length === 0) {
        return items;
    }

    if (!state || !state.filters || state.filters.length === 0) {
        return items;
    }

    state.filters.forEach((filter: {
        property: string;
        value: string;
    }) => {
        items = items.filter(item => {
            if (filter['property'].indexOf('.') !== -1) {
                let arr = filter['property'].split('.');
                if (Array.isArray(item[arr[0]]) && item[arr[0]].length) {
                    return item[arr[0]].some((data: any) => {
                        return filter['value'] === data[arr[1]];
                    });
                }
            } else {
                return regexpFilter(filter['value'], item[filter['property']]);
            }
        });
    });

    return items;
}

/**
 * Match items via RegExp
 *
 **
 *  ** deprecated param {string} terms
 *  ** deprecated param {*} testedValue
 * returns {boolean}
 */
export function regexpFilter(terms: string, testedValue: any): boolean {
    let reg = new RegExp('.*' + terms + '.*', 'i');
    return reg.test(testedValue);
}

/**
 * Sorting the data by column
 *
 **
 * template T
 *  ** deprecated param {T[]} items
 *  ** deprecated param {State} state
 * returns {T[]}
 */
export function doSorting<T extends { [key: string]: any | any[] }>(items: T[], state: State): T[] {
    if (!items || items.length === 0) {
        return items;
    }
    if (!state || !state.sort) {
        return items;
    }

    return items.sort((a: T, b: T) => {
        let comp: number = 0;
        if (typeof state.sort.by !== "string") {
            comp = state.sort.by.compare(a, b);
        } else {
            let propA = a[state.sort.by.toString()], propB = b[state.sort.by.toString()];
            if (typeof propA === "string") {
                comp = propA.localeCompare(propB);
            } else {
                if (propA > propB) {
                    comp = 1;
                } else if (propA < propB) {
                    comp = -1;
                }
            }
        }

        if (state.sort.reverse) {
            comp = -comp;
        }

        return comp;
    });
}

/**
 * Compare the two objects to adjust if they're equal
 *
 **
 *  ** deprecated param {*} a
 *  ** deprecated param {*} b
 * returns {boolean}
 */
export function compareValue(a: any, b: any): boolean {
    if ((a && !b) || (!a && b)) { return false; }
    if (!a && !b) { return true; }

    return JSON.stringify(a) === JSON.stringify(b);
}

/**
 * Check if the object is null or empty '{}'
 *
 **
 *  ** deprecated param {*} obj
 * returns {boolean}
 */
export function isEmptyObject(obj: any): boolean {
    return !obj || JSON.stringify(obj) === "{}";
}

/**
 * Deeper clone all
 *
 **
 *  ** deprecated param {*} srcObj
 * returns {*}
 */
export function clone(srcObj: any): any {
    if (!srcObj) { return null; }
    return JSON.parse(JSON.stringify(srcObj));
}

export function isEmpty(obj: any): boolean {
    return !obj || JSON.stringify(obj) === '{}';
}

export function downloadFile(fileData) {
    let url = window.URL.createObjectURL(fileData.data);
    let a = document.createElement("a");
    document.body.appendChild(a);
    a.setAttribute("style", "display: none");
    a.href = url;
    a.download = fileData.filename;
    a.click();
    window.URL.revokeObjectURL(url);
    a.remove();
}

export function getChanges(original: any, afterChange: any): { [key: string]: any | any[] } {
    let changes: { [key: string]: any | any[] } = {};
    if (!afterChange || !original) {
        return changes;
    }
    for (let prop of Object.keys(afterChange)) {
        let field = original[prop];
        if (field && field.editable) {
            if (!compareValue(field.value, afterChange[prop].value)) {
                changes[prop] = afterChange[prop].value;
                // Number
                if (typeof field.value === 'number') {
                    changes[prop] = +changes[prop];
                }

                // Trim string value
                if (typeof field.value === "string") {
                    changes[prop] = ('' + changes[prop]).trim();
                }
            }
        }
    }
    return changes;
}

/**
 * validate cron expressions
 * @param testValue
 */
export function cronRegex(testValue: any): boolean {
    // must have 6 fields
    if (testValue && testValue.trim().split(/\s+/g).length < 6) {
        return false;
    }
    return isValidCron(testValue, {seconds: true, alias: true, allowBlankDay: true});
}

/**
 * Keep decimal digits
 * @param count number
 * @param decimals number 1、2、3 ···
 */
export const roundDecimals = (count, decimals = 0) => {
    return Number(`${Math.round(+`${count}e${decimals}`)}e-${decimals}`);
};
/**
   * get suitable unit
   * @param count number  ;bit
   * @param quotaUnitsDeep Array link  QuotaUnits;
   */
export const getSuitableUnit = (count: number, quotaUnitsDeep: QuotaUnitInterface[]): string => {
    for (let unitObj of quotaUnitsDeep) {
        if (count / StorageMultipleConstant >= 1 && quotaUnitsDeep.length > 1) {
            quotaUnitsDeep.shift();
            return getSuitableUnit(count / StorageMultipleConstant, quotaUnitsDeep);
        } else {
            return +count ? `${roundDecimals(count, 2)}${unitObj.UNIT}` : `0${unitObj.UNIT}`;
        }
    }
    return `${roundDecimals(count, 2)}${QuotaUnits[0].UNIT}`;
};
/**
 * get byte from GB、MB、TB
 * @param count number
 * @param unit MB /GB / TB
 */
export const getByte = (count: number, unit: string): number => {
    let flagIndex;
    return QuotaUnits.reduce((totalValue, currentValue, index) => {
        if (currentValue.UNIT === unit) {
            flagIndex = index;
            return totalValue;
        } else {
            if (!flagIndex) {
                return totalValue * StorageMultipleConstant;
            }
            return totalValue;
        }
    }, count);
};
/**
 * get integet and unit  in hard storage and used storage;and the unit of used storage <= the unit of hard storage
 * @param hardNumber hard storage number
 * @param quotaUnitsDeep clone(Quotas)
 * @param usedNumber used storage number
 * @param quotaUnitsDeepClone clone(Quotas)
 */
export const GetIntegerAndUnit = (hardNumber: number, quotaUnitsDeep: QuotaUnitInterface[]
    , usedNumber: number, quotaUnitsDeepClone: QuotaUnitInterface[]) => {

    for (let unitObj of quotaUnitsDeep) {
        if (hardNumber % StorageMultipleConstant === 0 && quotaUnitsDeep.length > 1) {
            quotaUnitsDeep.shift();
            if (usedNumber / StorageMultipleConstant >= 1) {
                quotaUnitsDeepClone.shift();
                return GetIntegerAndUnit(hardNumber / StorageMultipleConstant
                    , quotaUnitsDeep, usedNumber / StorageMultipleConstant, quotaUnitsDeepClone);
            } else {
                return GetIntegerAndUnit(hardNumber / StorageMultipleConstant, quotaUnitsDeep, usedNumber, quotaUnitsDeepClone);
            }
        } else {
            return {
                partNumberHard: +hardNumber,
                partCharacterHard: unitObj.UNIT,
                partNumberUsed: roundDecimals(+usedNumber, 2),
                partCharacterUsed: quotaUnitsDeepClone[0].UNIT
            };
        }
    }
};

export const validateLimit = unitContrl => {
  return (control: AbstractControl) => {
    if (
      // 1024TB
      getByte(control.value, unitContrl.value) >
      Math.pow(StorageMultipleConstant, 5)
    ) {
      return {
        error: true
      };
    }
    return null;
  };
};

export function formatSize(tagSize: string): string {
    let size: number = Number.parseInt(tagSize);
    if (Math.pow(1024, 1) <= size && size < Math.pow(1024, 2)) {
        return (size / Math.pow(1024, 1)).toFixed(2) + "KB";
    } else if (Math.pow(1024, 2) <= size && size < Math.pow(1024, 3)) {
        return (size / Math.pow(1024, 2)).toFixed(2) + "MB";
    } else if (Math.pow(1024, 3) <= size && size < Math.pow(1024, 4)) {
        return (size / Math.pow(1024, 3)).toFixed(2) + "GB";
    } else {
        return size + "B";
    }
}

/**
 * Simple object check.
 * @param item
 * @returns {boolean}
 */
export function isObject(item): boolean {
    return (item && typeof item === 'object' && !Array.isArray(item));
}

/**
 * Deep merge two objects.
 * @param target
 * @param ...sources
 */
export function mergeDeep(target, ...sources) {
    if (!sources.length) { return target; }
    const source = sources.shift();

    if (isObject(target) && isObject(source)) {
        for (const key in source) {
            if (isObject(source[key])) {
                if (!target[key]) { Object.assign(target, { [key]: {} }); }
                mergeDeep(target[key], source[key]);
            } else {
                Object.assign(target, { [key]: source[key] });
            }
        }
    }
    return mergeDeep(target, ...sources);
}
export function dbEncodeURIComponent(url: string) {
    if (typeof url === "string") {
        return encodeURIComponent(encodeURIComponent(url));
    }
    return "";
}

/**
 * delete empty key
 * @param obj
 */
export function deleteEmptyKey(obj: Object): void {
   if (isEmptyObject(obj)) {
       return;
   }
    for ( let key in obj ) {
        if ( !obj[key] ) {
            delete obj[key];
        }
    }
}