import React from "react"
import { Link } from "react-router-dom"
import { Row, Col, Modal, Form, Input, Select, Button, Table, Icon, Tooltip, Tag, Popconfirm, Spin, notification } from "antd"

import Utils from "./utils"
import * as cs from "./constants"

class CreateFormDef extends React.PureComponent {
    state = {
        confirmDirty: false,
        modalWaiting: false
    }

    // Handle create / edit form submission.
    handleSubmit = (e) => {
        e.preventDefault()
        this.props.form.validateFields((err, values) => {
            if (err) {
                return
            }

            this.setState({ modalWaiting: true })
            if (this.props.formType === cs.FormCreate) {
                // Create a new list.
                this.props.modelRequest(cs.ModelLists, cs.Routes.CreateList, cs.MethodPost, values).then(() => {
                    notification["success"]({ placement: "topRight", message: "List created", description: `"${values["name"]}" created` })
                    this.props.fetchRecords()
                    this.props.onClose()
                    this.setState({ modalWaiting: false })
                }).catch(e => {
                    notification["error"]({ message: "Error", description: e.message })
                    this.setState({ modalWaiting: false })
                })
            } else {
                // Edit a list.
                this.props.modelRequest(cs.ModelLists, cs.Routes.UpdateList, cs.MethodPut, { ...values, id: this.props.record.id }).then(() => {
                    notification["success"]({ placement: "topRight", message: "List modified", description: `"${values["name"]}" modified` })
                    this.props.fetchRecords()
                    this.props.onClose()
                    this.setState({ modalWaiting: false })
                }).catch(e => {
                    notification["error"]({ message: "Error", description: e.message })
                    this.setState({ modalWaiting: false })
                })
            }
        })
    }

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

        const formItemLayout = {
            labelCol: { xs: { span: 16 }, sm: { span: 4 } },
            wrapperCol: { xs: { span: 16 }, sm: { span: 18 } }
        }

        if (formType === null) {
            return null
        }

        return (
            <Modal visible={ true } title={ formType === cs.FormCreate ? "Create a list" : record.name }
                okText={ this.state.form === cs.FormCreate ? "Create" : "Save" }
                confirmLoading={ this.state.modalWaiting }
                onCancel={ onClose }
                onOk={ this.handleSubmit }>
                
                <div id="modal-alert-container"></div>

                <Spin spinning={ this.props.reqStates[cs.ModelLists] === cs.StatePending }>
                    <Form onSubmit={this.handleSubmit}>
                        <Form.Item {...formItemLayout} label="Name">
                            {getFieldDecorator("name", {
                                initialValue: record.name,
                                rules: [{ required: true }]
                            })(<Input autoFocus maxLength="200" />)}
                        </Form.Item>
                        <Form.Item {...formItemLayout} name="type" label="Type" extra="Public lists are open to the world to subscribe">
                            {getFieldDecorator("type", { initialValue: record.type ? record.type : "private", rules: [{ required: true }] })(
                                <Select style={{ maxWidth: 120 }}>
                                    <Select.Option value="private">Private</Select.Option>
                                    <Select.Option value="public">Public</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 mode="tags"></Select>
                            )}
                        </Form.Item>
                    </Form>
                </Spin>
            </Modal>
        )
    }
}

const CreateForm = Form.create()(CreateFormDef)

class Lists extends React.PureComponent {
    state = {
        formType: null,
        record: {}
    }

    constructor(props) {
        super(props)

        this.columns = [{
            title: "Name",
            dataIndex: "name",
            sorter: true,
            width: "50%",
            render: (text, record) => {
                const out = [];
                out.push(
                    <div className="name" key={`name-${record.id}`}><Link to={ `/subscribers/lists/${record.id}` }>{ text }</Link></div>
                )

                if(record.tags.length > 0) {
                    for (let i = 0; i < record.tags.length; i++) {
                        out.push(<Tag key={`tag-${i}`}>{ record.tags[i] }</Tag>);
                    }
                }

                return out
            }
        },
        {
            title: "Type",
            dataIndex: "type",
            width: "5%",
            render: (type, _) => {
                let color = type === "private" ? "orange" : "green"
                return <Tag color={color}>{type}</Tag>
            }
        },
        {
            title: "Subscribers",
            dataIndex: "subscriber_count",
            width: "10%",
            align: "center"
        },
        {
            title: "Created",
            dataIndex: "created_at",
            render: (date, _) => {
                return Utils.DateString(date)
            }
        },
        {
            title: "Updated",
            dataIndex: "updated_at",
            render: (date, _) => {
                return Utils.DateString(date)
            }
        },
        {
            title: "",
            dataIndex: "actions",
            width: "10%",
            render: (text, record) => {
                return (
                    <div className="actions">
                        <Tooltip title="Send a campaign"><a role="button"><Icon type="rocket" /></a></Tooltip>
                        <Tooltip title="Edit list"><a role="button" onClick={() => this.handleShowEditForm(record)}><Icon type="edit" /></a></Tooltip>
                        <Popconfirm title="Are you sure?" onConfirm={() => this.deleteRecord(record)}>
                            <Tooltip title="Delete list" placement="bottom"><a role="button"><Icon type="delete" /></a></Tooltip>
                        </Popconfirm>
                    </div>
                )
            }
        }]
    }

    componentDidMount() {
        this.fetchRecords()
    }

    fetchRecords = () => {
        this.props.modelRequest(cs.ModelLists, cs.Routes.GetLists, cs.MethodGet)
    }

    deleteRecord = (record) => {
        this.props.modelRequest(cs.ModelLists, cs.Routes.DeleteList, cs.MethodDelete, { id: record.id })
            .then(() => {
                notification["success"]({ placement: "topRight", message: "List deleted", description: `"${record.name}" deleted` })
                
                // Reload the table.
                this.fetchRecords()
            }).catch(e => {
                notification["error"]({ message: "Error", description: e.message })
            })
    }

    handleHideForm = () => {
        this.setState({ formType: null })
    }

    handleShowCreateForm = () => {
        this.setState({ formType: cs.FormCreate, record: {} })
    }

    handleShowEditForm = (record) => {
        this.setState({ formType: cs.FormEdit, record: record })
    }

    render() {
        return (
            <section className="content">
                <Row>
                    <Col span={22}><h1>Lists ({this.props.data[cs.ModelLists].length}) </h1></Col>
                    <Col span={2}>
                        <Button type="primary" icon="plus" onClick={this.handleShowCreateForm}>Create list</Button>
                    </Col>
                </Row>
                <br />

                <Table
                    className="lists"
                    columns={ this.columns }
                    rowKey={ record => record.uuid }
                    dataSource={ this.props.data[cs.ModelLists] }
                    loading={ this.props.reqStates[cs.ModelLists] !== cs.StateDone }
                    pagination={ false }
                />

                <CreateForm { ...this.props }
                    formType={ this.state.formType }
                    record={ this.state.record }
                    onClose={ this.handleHideForm }
                    fetchRecords = { this.fetchRecords }
                />
            </section>
        )
    }
}

export default Lists