import React from "react"
import {
  Modal,
  Tabs,
  Row,
  Col,
  Form,
  Switch,
  Select,
  Radio,
  Tag,
  Input,
  Button,
  Icon,
  Spin,
  DatePicker,
  Popconfirm,
  notification
} from "antd"
import * as cs from "./constants"
import Media from "./Media"
import ModalPreview from "./ModalPreview"

import moment from "moment"
import parseUrl from "querystring"
import ReactQuill from "react-quill"
import Delta from "quill-delta"
import "react-quill/dist/quill.snow.css"

const formItemLayout = {
  labelCol: { xs: { span: 16 }, sm: { span: 4 } },
  wrapperCol: { xs: { span: 16 }, sm: { span: 10 } }
}

class Editor extends React.PureComponent {
  state = {
    editor: null,
    quill: null,
    rawInput: null,
    selContentType: "richtext",
    contentType: "richtext",
    body: ""
  }

  quillModules = {
    toolbar: {
      container: [
        [{ header: [1, 2, 3, false] }],
        ["bold", "italic", "underline", "strike", "blockquote", "code"],
        [{ color: [] }, { background: [] }, { size: [] }],
        [
          { list: "ordered" },
          { list: "bullet" },
          { indent: "-1" },
          { indent: "+1" }
        ],
        [
          { align: "" },
          { align: "center" },
          { align: "right" },
          { align: "justify" }
        ],
        ["link", "image"],
        ["clean", "font"]
      ],
      handlers: {
        image: () => {
          this.props.toggleMedia()
        }
      }
    }
  }

  componentDidMount = () => {
    // The editor component will only load once the individual campaign metadata
    // has loaded, i.e., record.body is guaranteed to be available here.
    if (this.props.record && this.props.record.id) {
      this.setState({
        body: this.props.record.body,
        contentType: this.props.record.content_type,
        selContentType: this.props.record.content_type
      })
    }
  }

  // Custom handler for inserting images from the media popup.
  insertMedia = uri => {
    const quill = this.state.quill.getEditor()
    let range = quill.getSelection(true)
    quill.updateContents(
      new Delta()
        .retain(range.index)
        .delete(range.length)
        .insert({ image: this.props.config.rootURL + uri }),
      null
    )
  }

  handleSelContentType = (_, e) => {
    this.setState({ selContentType: e.props.value })
  }

  handleSwitchContentType = () => {
    this.setState({ contentType: this.state.selContentType })
    if (!this.state.quill || !this.state.quill.editor || !this.state.rawInput) {
      return
    }

    // Switching from richtext to html.
    let body = ""
    if (this.state.selContentType === "html") {
      body = this.state.quill.editor.container.firstChild.innerHTML
      // eslint-disable-next-line
      this.state.rawInput.value = body
    } else if (this.state.selContentType === "richtext") {
      body = this.state.rawInput.value
      this.state.quill.editor.clipboard.dangerouslyPasteHTML(body, "raw")
    }

    this.props.setContent(this.state.selContentType, body)
  }

  render() {
    return (
      <div>
        <header className="header">
          {!this.props.formDisabled && (
            <Row>
              <Col span={20}>
                <div className="content-type">
                  <p>Content format</p>
                  <Select
                    name="content_type"
                    onChange={this.handleSelContentType}
                    style={{ minWidth: 200 }}
                    value={this.state.selContentType}
                  >
                    <Select.Option value="richtext">Rich Text</Select.Option>
                    <Select.Option value="html">Raw HTML</Select.Option>
                  </Select>
                  {this.state.contentType !== this.state.selContentType && (
                    <div className="actions">
                      <Popconfirm
                        title="The content may lose its formatting. Are you sure?"
                        onConfirm={this.handleSwitchContentType}
                      >
                        <Button>
                          <Icon type="save" /> Switch format
                        </Button>
                      </Popconfirm>
                    </div>
                  )}
                </div>
              </Col>
              <Col span={4} />
            </Row>
          )}
        </header>
        <ReactQuill
          readOnly={this.props.formDisabled}
          style={{
            display: this.state.contentType === "richtext" ? "block" : "none"
          }}
          modules={this.quillModules}
          defaultValue={this.props.record.body}
          ref={o => {
            if (!o) {
              return
            }

            this.setState({ quill: o })
            document.querySelector(".ql-editor").focus()
          }}
          onChange={() => {
            if (!this.state.quill) {
              return
            }

            this.props.setContent(
              this.state.contentType,
              this.state.quill.editor.root.innerHTML
            )
          }}
        />

        <Input.TextArea
          readOnly={this.props.formDisabled}
          placeholder="Your message here"
          style={{
            display: this.state.contentType === "html" ? "block" : "none"
          }}
          id="html-body"
          rows={10}
          autosize={{ minRows: 2, maxRows: 10 }}
          defaultValue={this.props.record.body}
          ref={o => {
            if (!o) {
              return
            }

            this.setState({ rawInput: o.textAreaRef })
          }}
          onChange={e => {
            this.props.setContent(this.state.contentType, e.target.value)
          }}
        />
      </div>
    )
  }
}

class TheFormDef extends React.PureComponent {
  state = {
    editorVisible: false,
    sendLater: false,
    loading: false
  }

  componentWillReceiveProps(nextProps) {
    const has = nextProps.isSingle && nextProps.record.send_at !== null
    if (!has) {
      return
    }

    if (this.state.sendLater !== has) {
      this.setState({ sendLater: has })
    }
  }

  validateEmail = (rule, value, callback) => {
    if (!value.match(/(.+?)\s<(.+?)@(.+?)>/)) {
      return callback("Format should be: Your Name <email@address.com>")
    }

    callback()
  }

  handleSendLater = e => {
    this.setState({ sendLater: e })
  }

  // Handle create / edit form submission.
  handleSubmit = cb => {
    if (this.state.loading) {
      return
    }

    if (!cb) {
      // Set a fake callback.
      cb = () => {}
    }

    this.props.form.validateFields((err, values) => {
      if (err) {
        return
      }

      if (!values.tags) {
        values.tags = []
      }

      values.body = this.props.body
      values.content_type = this.props.contentType

      // Create a new campaign.
      this.setState({ loading: true })
      if (!this.props.isSingle) {
        this.props
          .modelRequest(
            cs.ModelCampaigns,
            cs.Routes.CreateCampaign,
            cs.MethodPost,
            values
          )
          .then(resp => {
            notification["success"]({
              placement: cs.MsgPosition,
              message: "Campaign created",
              description: `"${values["name"]}" created`
            })

            this.props.route.history.push({
              pathname: cs.Routes.ViewCampaign.replace(
                ":id",
                resp.data.data.id
              ),
              hash: "content-tab"
            })
            cb(true)
          })
          .catch(e => {
            notification["error"]({
              placement: cs.MsgPosition,
              message: "Error",
              description: e.message
            })
            this.setState({ loading: false })
            cb(false)
          })
      } else {
        this.props
          .modelRequest(
            cs.ModelCampaigns,
            cs.Routes.UpdateCampaign,
            cs.MethodPut,
            { ...values, id: this.props.record.id }
          )
          .then(resp => {
            notification["success"]({
              placement: cs.MsgPosition,
              message: "Campaign updated",
              description: `"${values["name"]}" updated`
            })
            this.setState({ loading: false })
            cb(true)
          })
          .catch(e => {
            notification["error"]({
              placement: cs.MsgPosition,
              message: "Error",
              description: e.message
            })
            this.setState({ loading: false })
            cb(false)
          })
      }
    })
  }

  handleTestCampaign = e => {
    e.preventDefault()
    this.props.form.validateFields((err, values) => {
      if (err) {
        return
      }

      if (!values.tags) {
        values.tags = []
      }

      values.id = this.props.record.id
      values.body = this.props.body
      values.content_type = this.props.contentType

      this.setState({ loading: true })
      this.props
        .request(cs.Routes.TestCampaign, cs.MethodPost, values)
        .then(resp => {
          this.setState({ loading: false })
          notification["success"]({
            placement: cs.MsgPosition,
            message: "Test sent",
            description: `Test messages sent`
          })
        })
        .catch(e => {
          this.setState({ loading: false })
          notification["error"]({
            placement: cs.MsgPosition,
            message: "Error",
            description: e.message
          })
        })
    })
  }

  render() {
    const { record } = this.props
    const { getFieldDecorator } = this.props.form

    let subLists = []
    if (this.props.isSingle && record.lists) {
      subLists = record.lists
        .map(v => {
          return v.id !== 0 ? v.id : null
        })
        .filter(v => v !== null)
    } else if (this.props.route.location.search) {
      // list_id in the query params.
      const p = parseUrl.parse(this.props.route.location.search.substring(1))
      if (p.hasOwnProperty("list_id")) {
        // eslint-disable-next-line radix
        const id = parseInt(p.list_id)
        if (id) {
          subLists.push(id)
        }
      }
    }

    if (this.record) {
      this.props.pageTitle(record.name + " / Campaigns")
    } else {
      this.props.pageTitle("New campaign")
    }

    return (
      <div>
        <Spin spinning={this.state.loading}>
          <Form onSubmit={this.handleSubmit}>
            <Form.Item {...formItemLayout} label="Campaign name">
              {getFieldDecorator("name", {
                extra:
                  "This is internal and will not be visible to subscribers",
                initialValue: record.name,
                rules: [{ required: true }]
              })(
                <Input
                  disabled={this.props.formDisabled}
                  autoFocus
                  maxLength={200}
                />
              )}
            </Form.Item>
            <Form.Item {...formItemLayout} label="Subject">
              {getFieldDecorator("subject", {
                initialValue: record.subject,
                rules: [{ required: true }]
              })(<Input disabled={this.props.formDisabled} maxLength={500} />)}
            </Form.Item>
            <Form.Item {...formItemLayout} label="From address">
              {getFieldDecorator("from_email", {
                initialValue: record.from_email
                  ? record.from_email
                  : this.props.config.fromEmail,
                rules: [{ required: true }, { validator: this.validateEmail }]
              })(
                <Input
                  disabled={this.props.formDisabled}
                  placeholder="Company Name <email@company.com>"
                  maxLength={200}
                />
              )}
            </Form.Item>
            <Form.Item
              {...formItemLayout}
              label="Lists"
              extra="Lists to subscribe to"
            >
              {getFieldDecorator("lists", {
                initialValue:
                  subLists.length > 0
                    ? subLists
                    : this.props.data[cs.ModelLists].hasOwnProperty(
                        "results"
                      ) && this.props.data[cs.ModelLists].results.length === 1
                    ? [this.props.data[cs.ModelLists].results[0].id]
                    : undefined,
                rules: [{ required: true }]
              })(
                <Select disabled={this.props.formDisabled} mode="multiple">
                  {this.props.data[cs.ModelLists].hasOwnProperty("results") &&
                    [...this.props.data[cs.ModelLists].results].map((v, i) => (
                      <Select.Option value={v["id"]} key={v["id"]}>
                        {v["name"]}
                      </Select.Option>
                    ))}
                </Select>
              )}
            </Form.Item>
            <Form.Item {...formItemLayout} label="Template" extra="Template">
              {getFieldDecorator("template_id", {
                initialValue: record.template_id
                  ? record.template_id
                  : this.props.data[cs.ModelTemplates].length > 0
                  ? this.props.data[cs.ModelTemplates].filter(
                      t => t.is_default
                    )[0].id
                  : undefined,
                rules: [{ required: true }]
              })(
                <Select disabled={this.props.formDisabled}>
                  {this.props.data[cs.ModelTemplates].map((v, i) => (
                    <Select.Option value={v["id"]} key={v["id"]}>
                      {v["name"]}
                    </Select.Option>
                  ))}
                </Select>
              )}
            </Form.Item>
            <Form.Item
              {...formItemLayout}
              label="Tags"
              extra="Hit Enter after typing a word to add multiple tags"
            >
              {getFieldDecorator("tags", { initialValue: record.tags })(
                <Select disabled={this.props.formDisabled} mode="tags" />
              )}
            </Form.Item>
            <Form.Item
              {...formItemLayout}
              label="Messenger"
              style={{
                display:
                  this.props.config.messengers.length === 1 ? "none" : "block"
              }}
            >
              {getFieldDecorator("messenger", {
                initialValue: record.messenger ? record.messenger : "email"
              })(
                <Radio.Group className="messengers">
                  {[...this.props.config.messengers].map((v, i) => (
                    <Radio disabled={this.props.formDisabled} value={v} key={v}>
                      {v}
                    </Radio>
                  ))}
                </Radio.Group>
              )}
            </Form.Item>

            <hr />
            <Form.Item {...formItemLayout} label="Send later?">
              <Row>
                <Col span={2}>
                  {getFieldDecorator("send_later", {
                    defaultChecked: this.props.isSingle
                  })(
                    <Switch
                      disabled={this.props.formDisabled}
                      checked={this.state.sendLater}
                      onChange={this.handleSendLater}
                    />
                  )}
                </Col>
                <Col span={12}>
                  {this.state.sendLater &&
                    getFieldDecorator("send_at", {
                      initialValue:
                        record && typeof record.send_at === "string"
                          ? moment(record.send_at)
                          : moment(new Date())
                              .add(1, "days")
                              .startOf("day")
                    })(
                      <DatePicker
                        disabled={this.props.formDisabled}
                        showTime
                        format="YYYY-MM-DD HH:mm:ss"
                        placeholder="Select a date and time"
                      />
                    )}
                </Col>
              </Row>
            </Form.Item>

            {this.props.isSingle && (
              <div>
                <hr />
                <Form.Item
                  {...formItemLayout}
                  label="Send test messages"
                  extra="Hit Enter after typing an address to add multiple recipients. The addresses must belong to existing subscribers."
                >
                  {getFieldDecorator("subscribers")(
                    <Select mode="tags" style={{ width: "100%" }} />
                  )}
                </Form.Item>
                <Form.Item {...formItemLayout} label="&nbsp;" colon={false}>
                  <Button onClick={this.handleTestCampaign}>
                    <Icon type="mail" /> Send test
                  </Button>
                </Form.Item>
              </div>
            )}
          </Form>
        </Spin>
      </div>
    )
  }
}
const TheForm = Form.create()(TheFormDef)

class Campaign extends React.PureComponent {
  state = {
    campaignID: this.props.route.match.params
      ? parseInt(this.props.route.match.params.campaignID, 10)
      : 0,
    record: {},
    formRef: null,
    contentType: "richtext",
    previewRecord: null,
    body: "",
    currentTab: "form",
    editor: null,
    loading: true,
    mediaVisible: false,
    formDisabled: false
  }

  componentDidMount = () => {
    // Fetch lists.
    this.props.modelRequest(cs.ModelLists, cs.Routes.GetLists, cs.MethodGet, {
      per_page: "all"
    })

    // Fetch templates.
    this.props.modelRequest(
      cs.ModelTemplates,
      cs.Routes.GetTemplates,
      cs.MethodGet
    )

    // Fetch campaign.
    if (this.state.campaignID) {
      this.fetchRecord(this.state.campaignID)
    } else {
      this.setState({ loading: false })
    }

    // Content tab?
    if (document.location.hash === "#content-tab") {
      this.setCurrentTab("content")
    }
  }

  fetchRecord = id => {
    this.props
      .request(cs.Routes.GetCampaign, cs.MethodGet, { id: id })
      .then(r => {
        const record = r.data.data
        this.setState({ record: record, loading: false })

        // The form for non draft and scheduled campaigns should be locked.
        if (
          record.status !== cs.CampaignStatusDraft &&
          record.status !== cs.CampaignStatusScheduled
        ) {
          this.setState({ formDisabled: true })
        }
      })
      .catch(e => {
        notification["error"]({
          placement: cs.MsgPosition,
          message: "Error",
          description: e.message
        })
      })
  }

  setContent = (contentType, body) => {
    this.setState({ contentType: contentType, body: body })
  }

  toggleMedia = () => {
    this.setState({ mediaVisible: !this.state.mediaVisible })
  }

  setCurrentTab = tab => {
    this.setState({ currentTab: tab })
  }

  handlePreview = record => {
    this.setState({ previewRecord: record })
  }

  render() {
    return (
      <section className="content campaign">
        <Row>
          <Col span={16}>
            {!this.state.record.id && <h1>Create a campaign</h1>}
            {this.state.record.id && (
              <div>
                <h1>
                  <Tag
                    color={cs.CampaignStatusColors[this.state.record.status]}
                  >
                    {this.state.record.status}
                  </Tag>
                  {this.state.record.name}
                </h1>
                <span className="text-tiny text-grey">
                  ID {this.state.record.id} &mdash; UUID{" "}
                  {this.state.record.uuid}
                </span>
              </div>
            )}
          </Col>
          <Col span={8} className="right">
            {!this.state.formDisabled && !this.state.loading && (
              <div>
                <Button
                  type="primary"
                  icon="save"
                  onClick={() => {
                    this.state.formRef.handleSubmit()
                  }}
                >
                  {!this.state.record.id ? "Continue" : "Save changes"}
                </Button>{" "}
                {this.state.record.status === cs.CampaignStatusDraft &&
                  this.state.record.send_at && (
                    <Popconfirm
                      title="The campaign will start automatically at the scheduled date and time. Schedule now?"
                      onConfirm={() => {
                        this.state.formRef.handleSubmit(() => {
                          this.props.route.history.push({
                            pathname: cs.Routes.ViewCampaigns,
                            state: {
                              campaign: this.state.record,
                              campaignStatus: cs.CampaignStatusScheduled
                            }
                          })
                        })
                      }}
                    >
                      <Button icon="clock-circle" type="primary">
                        Schedule campaign
                      </Button>
                    </Popconfirm>
                  )}
                {this.state.record.status === cs.CampaignStatusDraft &&
                  !this.state.record.send_at && (
                    <Popconfirm
                      title="Campaign properties cannot be changed once it starts. Save changes and start now?"
                      onConfirm={() => {
                        this.state.formRef.handleSubmit(() => {
                          this.props.route.history.push({
                            pathname: cs.Routes.ViewCampaigns,
                            state: {
                              campaign: this.state.record,
                              campaignStatus: cs.CampaignStatusRunning
                            }
                          })
                        })
                      }}
                    >
                      <Button icon="rocket" type="primary">
                        Start campaign
                      </Button>
                    </Popconfirm>
                  )}
              </div>
            )}
          </Col>
        </Row>
        <br />

        <Tabs
          type="card"
          activeKey={this.state.currentTab}
          onTabClick={t => {
            this.setState({ currentTab: t })
          }}
        >
          <Tabs.TabPane tab="Campaign" key="form">
            <Spin spinning={this.state.loading}>
              <TheForm
                {...this.props}
                wrappedComponentRef={r => {
                  if (!r) {
                    return
                  }
                  // Take the editor's reference and save it in the state
                  // so that it's insertMedia() function can be passed to <Media />
                  this.setState({ formRef: r })
                }}
                record={this.state.record}
                isSingle={this.state.record.id ? true : false}
                body={
                  this.state.body ? this.state.body : this.state.record.body
                }
                contentType={this.state.contentType}
                formDisabled={this.state.formDisabled}
                fetchRecord={this.fetchRecord}
                setCurrentTab={this.setCurrentTab}
              />
            </Spin>
          </Tabs.TabPane>
          <Tabs.TabPane
            tab="Content"
            disabled={this.state.record.id ? false : true}
            key="content"
          >
            {this.state.record.id && (
              <div>
                <Editor
                  {...this.props}
                  ref={r => {
                    if (!r) {
                      return
                    }
                    // Take the editor's reference and save it in the state
                    // so that it's insertMedia() function can be passed to <Media />
                    this.setState({ editor: r })
                  }}
                  isSingle={this.state.record.id ? true : false}
                  record={this.state.record}
                  visible={this.state.editorVisible}
                  toggleMedia={this.toggleMedia}
                  setContent={this.setContent}
                  formDisabled={this.state.formDisabled}
                />
                <div className="content-actions">
                  <p>
                    <Button
                      icon="search"
                      onClick={() => this.handlePreview(this.state.record)}
                    >
                      Preview
                    </Button>
                  </p>
                </div>
              </div>
            )}
            {!this.state.record.id && <Spin className="empty-spinner" />}
          </Tabs.TabPane>
        </Tabs>

        <Modal
          visible={this.state.mediaVisible}
          width="900px"
          title="Media"
          okText={"Ok"}
          onCancel={this.toggleMedia}
          onOk={this.toggleMedia}
        >
          <Media
            {...{
              ...this.props,
              insertMedia: this.state.editor
                ? this.state.editor.insertMedia
                : null,
              onCancel: this.toggleMedia,
              onOk: this.toggleMedia
            }}
          />
        </Modal>

        {this.state.previewRecord && (
          <ModalPreview
            title={this.state.previewRecord.name}
            body={this.state.body}
            previewURL={cs.Routes.PreviewCampaign.replace(
              ":id",
              this.state.previewRecord.id
            )}
            onCancel={() => {
              this.setState({ previewRecord: null })
            }}
          />
        )}
      </section>
    )
  }
}

export default Campaign