import 'dart:ui';

import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:charts_flutter/flutter.dart' as charts;
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';

import 'do.dart';

class POSubmission {
  String id;
  DateTime poDate;
  String poNumber;
  String status;
  String poReceiptUrl;
  List<String> poReceiptUrls;
  String storageReceiptUrl;
  int storageCharge;
  int amount;
  String userID;
  String userName;
  String comment;
  String bizName;
  DateTime poApproveDate;

  List<POLine> poLines = [];
  List<DOSubmission> dos = [];

  int get getAmount => poLines.fold(0, (p, e) => p + e.amount);

  POSubmission(
      {this.id,
      this.poDate,
      this.poNumber,
      this.status,
      this.poReceiptUrl,
      this.storageReceiptUrl,
      this.storageCharge = 0,
      this.amount = 0,
      this.userID,
      this.userName,
      this.comment,
      this.bizName,
      this.poApproveDate,
      this.poReceiptUrls});

  bool isPending() {
    return status == "pending";
  }

  bool isApproved() {
    return status == "approved";
  }

  bool allowSingleType() {
    return dos.length == 0;
  }

  bool hasStorageCharge() {
    return this.storageCharge != null && this.storageCharge > 0;
  }

  bool hasStorageReceipt() {
    return this.storageReceiptUrl != null && this.storageReceiptUrl != "";
  }

  bool hasPaymentReceipt() {
    return (this.poReceiptUrl != null && this.poReceiptUrl != "") ||
        (this.poReceiptUrls != null && this.poReceiptUrls.length > 0);
  }

  factory POSubmission.fromMap(Map<String, dynamic> map, String id) {
    var ts = (map['po_date'] as Timestamp);
    var poAppovetTS = (map['po_approved_date'] as Timestamp);
    var poReceiptUrls = (map['po_receipt_urls'] as List);
    if (poReceiptUrls != null) {
      poReceiptUrls = List<String>.from(poReceiptUrls);
    } else {
      poReceiptUrls = new List<String>();
    }
    String receiptURL = map['po_receipt_url'];
    if (receiptURL != null && receiptURL != "") {
      poReceiptUrls.add(receiptURL);
    }
    return POSubmission(
        id: id,
        poDate: ts == null ? null : ts.toDate(),
        poNumber: map['po_number'],
        status: map['status'],
        poReceiptUrl: map['po_receipt_url'],
        storageReceiptUrl: map['storage_receipt_url'],
        storageCharge: map["storage_charge"],
        userID: map["user_id"],
        userName: map["user_name"],
        comment: map["comment"],
        bizName: map['biz_name'],
        poApproveDate: poAppovetTS == null ? null : poAppovetTS.toDate(),
        poReceiptUrls: poReceiptUrls == null ? null : poReceiptUrls,
        amount: map['amount']);
  }

  Map<String, dynamic> toMap() {
    List lines = poLines.map((l) => l.toMap()).toList();
    return {
      "id": id,
      'po_receipt_url': poReceiptUrl,
      'storage_receipt_url': storageReceiptUrl,
      'po_receipt_urls': poReceiptUrls,
      'po_lines': lines,
      'comment': comment,
    };
  }

  @override
  bool operator ==(other) {
    if (identical(this, other)) {
      return true;
    }
    return other.id == this.id;
  }

  @override
  int get hashCode {
    int result = 17;
    result = 37 * result + id.hashCode;
    return result;
  }

  @override
  String toString() {
    return 'POSubmission{id:$id, poDate:$poDate,poNumber:$poNumber,dos:$dos,poLines:$poLines,status:$status}';
  }
}

class POLine {
  String productID;
  String productName;
  int qty;
  int balanceQty;
  int deliveryBalanceQty;
  int amount;
  int price;
  int deliveryBalQty;

  String action;
  int displayOrder;

  POLine(
      {this.productID,
      this.productName,
      this.qty,
      this.amount,
      this.price,
      this.balanceQty,
      this.action,
      this.displayOrder,
      this.deliveryBalQty});

  @override
  bool operator ==(other) {
    if (identical(this, other)) {
      return true;
    }
    return other.productID == this.productID;
  }

  @override
  int get hashCode {
    int result = 17;
    result = 37 * result + productID.hashCode;
    return result;
  }

  Map<String, dynamic> toMap() {
    return {
      'product_id': productID,
      'product_name': productName,
      'quantity': qty,
      'price': price,
      'amount': amount,
      'action': action
    };
  }

  factory POLine.fromMap(Map<String, dynamic> map) {
    return POLine(
        productID: map['product_id'],
        productName: map['product_name'],
        qty: map['quantity'],
        balanceQty: map['balance_quantity'],
        amount: map['amount'],
        price: map['price'],
        action: map['action'],
        deliveryBalQty: map['delivery_balance_quantity']);
  }

  @override
  String toString() {
    return 'POLine{productID:$productID,productName:$productName,qty:$qty,amount:$amount,price:$price}';
  }
}

class POChartData {
  String userName;
  String productID;
  String productName;
  int balanceQty;
  int color;
  int displayOrder;

  get getColor => Color(color);

  POChartData(
      {@required this.userName,
      @required this.productName,
      @required this.balanceQty,
      @required this.color,
      this.productID,
      this.displayOrder});

  factory POChartData.fromJson(Map<String, dynamic> json, String qty) {
    var _qty = 0;
    var _color = 0;
    try {
      _qty = json[qty];
      _color = json['color'];
    } catch (e) {}

    return POChartData(
      userName: json['user_name'],
      productName: json['product_name'],
      productID: json['product_id'],
      balanceQty: _qty,
      color: _color,
    );
  }
}

class POBuyerData {
  String status;
  int amount;

  POBuyerData({
    @required this.status,
    @required this.amount,
  });

  get getColor => status == "approved"
      ? Colors.green
      : status == "rejected"
          ? Colors.red
          : status == "pending" ? Colors.blue : Colors.grey;

  factory POBuyerData.fromJson(Map<String, dynamic> json, String qty) {
    return POBuyerData(
      status: json['status'],
      amount: json[qty],
    );
  }
}