import React, { Component, Fragment } from "react"
import PropTypes from "prop-types"
import { regExpPattern } from "regexp-pattern"
import { api } from "src/API"
import { WaitModal, MessageModal } from "../Modal"
import {
  Box,
  Image,
  Link,
  Text,
  Row,
  Column,
  BoundInput,
  BoundCheckbox,
  BoundButton,
} from "ui"
import headerLogo from "images/logo.png"
import { versionInfo } from "../version"
import { FormBinder } from "react-form-binder"
import autobind from "autobind-decorator"
import { sizeInfo, colorInfo } from "ui/style"

export class Login extends Component {
  static propTypes = {
    history: PropTypes.oneOfType([PropTypes.array, PropTypes.object]),
  }

  static bindings = {
    email: {
      alwaysGet: true,
      isValid: (r, v) => regExpPattern.email.test(v),
    },
    password: {
      alwaysGet: true,
      isValid: (r, v) => v !== "",
    },
    rememberMe: {
      alwaysGet: true,
      initValue: true,
    },
    submit: {
      noValue: true,
      isDisabled: (r) => !r.anyModified || !r.allValid,
    },
  }

  constructor(props) {
    super(props)
    this.state = {
      waitModal: false,
      messageModal: null,
      binder: new FormBinder({}, Login.bindings),
    }
  }

  @autobind
  handleSubmit(e) {
    e.preventDefault()
    e.stopPropagation()

    if (this.state.messageModal) {
      this.setState({ messageModal: null })
      return
    } else if (this.state.waitModal) {
      return
    }

    let obj = this.state.binder.getModifiedBindingValues()

    if (obj) {
      this.setState({ waitModal: true })
      api
        .login(obj.email.trim(), obj.password, obj.rememberMe)
        .then((user) => {
          this.setState({ waitModal: false })
          if (this.props.history) {
            let url =
              new URLSearchParams(this.props.history.location.search).get(
                "redirect"
              ) || "/"

            try {
              this.props.history.replace(url)
            } catch (error) {
              this.props.history.replace("/")
            }
          }
        })
        .catch((error) => {
          this.setState({
            waitModal: false,
            messageModal: {
              icon: "hand",
              message: `Unable to login`,
              detail: error.message,
            },
          })
        })
    }
  }

  @autobind
  handleMessageModalDismiss() {
    this.setState({
      messageModal: null,
      binder: new FormBinder(
        { email: this.state.binder.getBindingValue("email") },
        Login.bindings
      ),
    })

    const elems = document.getElementsByName("password")

    if (elems) {
      elems[0].focus()
    }
  }

  render() {
    const { messageModal, waitModal } = this.state

    return (
      <Fragment>
        <Column.Item grow />
        <Column.Item>
          <Row>
            <Row.Item grow />
            <Row.Item width={sizeInfo.modalWidth}>
              <form onSubmit={this.handleSubmit} id="loginForm">
                <Box
                  border={{
                    width: sizeInfo.headerBorderWidth,
                    color: colorInfo.headerBorder,
                  }}
                  radius={sizeInfo.formBoxRadius}>
                  <Row>
                    <Row.Item width={sizeInfo.formRowSpacing} />
                    <Row.Item>
                      <Column>
                        <Column.Item height={sizeInfo.formColumnSpacing} />
                        <Column.Item>
                          <Row>
                            <Row.Item grow />
                            <Row.Item>
                              <Image
                                source={headerLogo}
                                width={sizeInfo.loginLogoWidth}
                              />
                            </Row.Item>
                            <Row.Item grow />
                          </Row>
                        </Column.Item>
                        <Column.Item height={sizeInfo.formColumnSpacing} />
                        <Column.Item>
                          <Text size="large">Login</Text>
                        </Column.Item>
                        <Column.Item height={sizeInfo.formColumnSpacing} />
                        <Column.Item>
                          <BoundInput
                            label="Email"
                            name="email"
                            placeholder="example@xyz.com"
                            binder={this.state.binder}
                            message="Enter the email address associated with your account."
                          />
                        </Column.Item>
                        <Column.Item>
                          <BoundInput
                            password
                            label="Password"
                            name="password"
                            binder={this.state.binder}
                            message="Enter your password."
                          />
                        </Column.Item>
                        <Column.Item>
                          <Row>
                            <Row.Item>
                              <Link to="/forgot-password">
                                Forgot your password?
                              </Link>
                            </Row.Item>
                            <Row.Item grow />
                            <Row.Item>
                              <BoundCheckbox
                                label="Remember Me"
                                name="rememberMe"
                                binder={this.state.binder}
                              />
                            </Row.Item>
                          </Row>
                        </Column.Item>
                        <Column.Item height={sizeInfo.formColumnSpacing} />
                        <Column.Item height={sizeInfo.buttonHeight}>
                          <Row>
                            <Row.Item grow />
                            <Row.Item>
                              <BoundButton
                                name="submit"
                                text="Login"
                                submit="loginForm"
                                binder={this.state.binder}
                              />
                            </Row.Item>
                          </Row>
                        </Column.Item>
                        <Column.Item height={sizeInfo.formColumnSpacing} />
                        <Column.Item>
                          <Text>
                            Please contact{" "}
                            <Link to={`mailto:${versionInfo.supportEmail}`}>
                              {versionInfo.supportEmail}
                            </Link>{" "}
                            to request login credentials.
                          </Text>
                        </Column.Item>
                        <Column.Item height={sizeInfo.formColumnSpacing} />
                      </Column>
                    </Row.Item>
                    <Row.Item width={sizeInfo.formRowSpacing} />
                  </Row>
                </Box>
              </form>
            </Row.Item>
            <Row.Item grow />
          </Row>
        </Column.Item>
        <Column.Item grow>
          <WaitModal open={waitModal} message="Logging in..." />
          <MessageModal
            error
            open={!!messageModal}
            icon={messageModal ? messageModal.icon : ""}
            message={messageModal ? messageModal.message : ""}
            detail={messageModal ? messageModal.detail : ""}
            onDismiss={this.handleMessageModalDismiss}
          />
        </Column.Item>
      </Fragment>
    )
  }
}