import { Observable } from 'rxjs/Rx';

import { Logger } from '@nsalaun/ng-logger';

var accountFormTmpl = require('./account.form.tmpl.html'),
    accountDeleteTmpl = require('./account.delete.tmpl.html');

import { Account } from './account';
import { AccountBalances } from './accountBalances';
import { AccountService } from './account.service';
import { AccountBalancesService } from './accountBalances.service';

export class AccountComponent {
    static $inject = ['AccountService', 'AccountBalancesService', 'Notification', 'Logger', '$modal'];

    accounts: Account[];

    constructor(
        private AccountService: AccountService,
        private AccountBalancesService: AccountBalancesService,
        private Notification,
        private Logger: Logger,
        private $modal
    ) {
        // Load accounts.
        this.load();
    }

    /*
     * Return the class for an account current value compared to authorized
     * overdraft.
     */
    rowClass(account) {
        // eslint-disable-next-line camelcase
        if (!account || !account.authorized_overdraft || !account.current) {
            return;
        }

        // eslint-disable-next-line camelcase
        if (account.current < account.authorized_overdraft) {
            return 'danger';
        } else if (account.current < 0) {
            return 'warning';
        }
    };

    /*
     * Return the class for a value compared to account authorized overdraft.
     */
    valueClass(account, value) {
        if (!account || !value) {
            return;
        }

        // eslint-disable-next-line camelcase
        if (value < account.authorized_overdraft) {
            return 'text-danger';
        } else if (value < 0) {
            return 'text-warning';
        }
    };

    load() {
        this.AccountService.query().subscribe(accounts => {
            this.accounts = accounts.map((account: Account) => {
                this.Logger.log(account);
                this.AccountBalancesService
                    .get(account.id)
                    .subscribe((accountBalances: AccountBalances) => {
                        account.balances = accountBalances;
                    })
                return account;
            })
        });
    };

    /*
     * Add an empty account.
     */
    add() {
        return this.modify(new Account());
    };

    /*
     * Save account.
     */
    save(account) {
        var observable: Observable<Account>;

        if(account.id) {
            observable = this.AccountService.update(account);
        } else {
            observable = this.AccountService.create(account);
        }

        observable.subscribe(account => {
            this.Notification.success('Account #' + account.id + ' saved.');

            this.load();
        }, result => {
            this.Logger.error('Error while saving account', account, result);

            this.Notification.error(
                'Error while saving account: ' + result.message
            );
        });
    };

    confirmDelete(account) {
        var title = "Delete account #" + account.id;

        this.$modal({
            templateUrl: accountDeleteTmpl,
            controller: function($scope, title, account, $delete) {
                $scope.title = title;
                $scope.account = account;
                $scope.$delete = function() {
                    $scope.$hide();
                    $delete($scope.account);
                };
            },
            locals: {
                title: title,
                account: account,
                $delete: (account: Account) => { this.delete(account); }
            }
        });
    };

    /*
     * Delete an account.
     */
    delete(account) {
        var id = account.id;

        this.AccountService.delete(account).subscribe(account => {
            this.Notification.success('account #' + id + ' deleted.');

            this.load();

            return account;
        }, function(result) {
            this.Notification.error(
                'An error occurred while trying to delete account #' +
                id + ':<br />' + result
            );
        });
    };

    /*
     * Open the popup to modify the account, save it on confirm.
     */
    modify(account) {
        // FIXME Alexis Lahouze 2017-06-15 i18n
        var title = "Account";

        if (account.id) {
            title = title + " #" + account.id;
        }

        this.$modal({
            templateUrl: accountFormTmpl,
            controller: function($scope, title, account, $save) {
                $scope.title = title;
                $scope.account = account;
                $scope.account.authorized_overdraft *= -1;
                $scope.$save = function() {
                    $scope.$hide();
                    $scope.account.authorized_overdraft *= -1;
                    $save($scope.account);
                };
            },
            locals: {
                title: title,
                account: account,
                $save: (account: Account) => { this.save(account); }
            }
        });
    };
};