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

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

const tagColors = {
  enabled: "green",
  blacklisted: "red"
};

class ListsFormDef extends React.PureComponent {
  state = {
    modalWaiting: false
  };

  // Handle create / edit form submission.
  handleSubmit = e => {
    e.preventDefault();

    var err = null,
      values = {};
    this.props.form.validateFields((e, v) => {
      err = e;
      values = v;
    });
    if (err) {
      return;
    }

    if (this.props.allRowsSelected) {
      values["list_ids"] = this.props.listIDs;
      values["query"] = this.props.query;
    } else {
      values["ids"] = this.props.selectedRows.map(r => r.id);
    }

    this.setState({ modalWaiting: true });
    this.props
      .request(
        !this.props.allRowsSelected
          ? cs.Routes.AddSubscribersToLists
          : cs.Routes.AddSubscribersToListsByQuery,
        cs.MethodPut,
        values
      )
      .then(() => {
        notification["success"]({
          message: "Lists changed",
          description: `Lists changed for selected subscribers`
        });
        this.props.clearSelectedRows();
        this.props.fetchRecords();
        this.setState({ modalWaiting: false });
        this.props.onClose();
      })
      .catch(e => {
        notification["error"]({ message: "Error", description: e.message });
        this.setState({ modalWaiting: false });
      });
  };

  render() {
    const { getFieldDecorator } = this.props.form;
    const formItemLayout = {
      labelCol: { xs: { span: 16 }, sm: { span: 4 } },
      wrapperCol: { xs: { span: 16 }, sm: { span: 18 } }
    };

    return (
      <Modal
        visible={true}
        width="750px"
        className="subscriber-lists-modal"
        title="Manage lists"
        okText="Ok"
        confirmLoading={this.state.modalWaiting}
        onCancel={this.props.onClose}
        onOk={this.handleSubmit}
      >
        <Form onSubmit={this.handleSubmit}>
          <Form.Item {...formItemLayout} label="Action">
            {getFieldDecorator("action", {
              initialValue: "add",
              rules: [{ required: true }]
            })(
              <Radio.Group>
                <Radio value="add">Add</Radio>
                <Radio value="remove">Remove</Radio>
                <Radio value="unsubscribe">Mark as unsubscribed</Radio>
              </Radio.Group>
            )}
          </Form.Item>
          <Form.Item {...formItemLayout} label="Lists">
            {getFieldDecorator("target_list_ids", {
              rules: [{ required: true }]
            })(
              <Select mode="multiple">
                {[...this.props.lists].map((v, i) => (
                  <Select.Option value={v.id} key={v.id}>
                    {v.name}
                  </Select.Option>
                ))}
              </Select>
            )}
          </Form.Item>
        </Form>
      </Modal>
    );
  }
}

const ListsForm = Form.create()(ListsFormDef);

class Subscribers extends React.PureComponent {
  defaultPerPage = 20;

  state = {
    formType: null,
    listsFormVisible: false,
    modalForm: null,
    record: {},
    queryParams: {
      page: 1,
      total: 0,
      perPage: this.defaultPerPage,
      listID: this.props.route.match.params.listID
        ? parseInt(this.props.route.match.params.listID, 10)
        : 0,
      list: null,
      query: null,
      targetLists: []
    },
    listModalVisible: false,
    allRowsSelected: false,
    selectedRows: []
  };

  // Pagination config.
  paginationOptions = {
    hideOnSinglePage: true,
    showSizeChanger: true,
    showQuickJumper: true,
    defaultPageSize: this.defaultPerPage,
    pageSizeOptions: ["20", "50", "70", "100"],
    position: "both",
    showTotal: (total, range) => `${range[0]} to ${range[1]} of ${total}`,
    onChange: (page, perPage) => {
      this.fetchRecords({ page: page, per_page: perPage });
    },
    onShowSizeChange: (page, perPage) => {
      this.fetchRecords({ page: page, per_page: perPage });
    }
  };

  constructor(props) {
    super(props);

    // Table layout.
    this.columns = [
      {
        title: "E-mail",
        dataIndex: "email",
        sorter: true,
        width: "25%",
        render: (text, record) => {
          const out = [];
          out.push(
            <div key={`sub-email-${record.id}`} className="sub-name">
              <Link
                to={`/subscribers/${record.id}`}
                onClick={e => {
                  // Open the individual subscriber page on ctrl+click
                  // and the modal otherwise.
                  if (!e.ctrlKey) {
                    this.handleShowEditForm(record);
                    e.preventDefault();
                  }
                }}
              >
                {text}
              </Link>
            </div>
          );

          if (record.lists.length > 0) {
            for (let i = 0; i < record.lists.length; i++) {
              out.push(
                <Tag
                  className="list"
                  key={`sub-${record.id}-list-${record.lists[i].id}`}
                >
                  <Link to={`/subscribers/lists/${record.lists[i].id}`}>
                    {record.lists[i].name}
                  </Link>
                  <sup
                    className={
                      "subscription-status " +
                      record.lists[i].subscription_status
                    }
                  >
                    {" "}
                    {record.lists[i].subscription_status}
                  </sup>
                </Tag>
              );
            }
          }

          return out;
        }
      },
      {
        title: "Name",
        dataIndex: "name",
        sorter: true,
        width: "15%",
        render: (text, record) => {
          return (
            <Link
              to={`/subscribers/${record.id}`}
              onClick={e => {
                // Open the individual subscriber page on ctrl+click
                // and the modal otherwise.
                if (!e.ctrlKey) {
                  this.handleShowEditForm(record);
                  e.preventDefault();
                }
              }}
            >
              {text}
            </Link>
          );
        }
      },
      {
        title: "Status",
        dataIndex: "status",
        width: "5%",
        render: (status, _) => {
          return (
            <Tag
              color={tagColors.hasOwnProperty(status) ? tagColors[status] : ""}
            >
              {status}
            </Tag>
          );
        }
      },
      {
        title: "Lists",
        dataIndex: "lists",
        width: "10%",
        align: "center",
        render: (lists, _) => {
          return (
            <span>
              {lists.reduce(
                (def, item) =>
                  def +
                  (item.subscription_status !==
                  cs.SubscriptionStatusUnsubscribed
                    ? 1
                    : 0),
                0
              )}
            </span>
          );
        }
      },
      {
        title: "Created",
        width: "10%",
        dataIndex: "created_at",
        render: (date, _) => {
          return Utils.DateString(date);
        }
      },
      {
        title: "Updated",
        width: "10%",
        dataIndex: "updated_at",
        render: (date, _) => {
          return Utils.DateString(date);
        }
      },
      {
        title: "",
        dataIndex: "actions",
        width: "10%",
        render: (text, record) => {
          return (
            <div className="actions">
              {/* <Tooltip title="Send an e-mail"><a role="button"><Icon type="rocket" /></a></Tooltip> */}
              <Tooltip title="Edit subscriber">
                <a
                  role="button"
                  onClick={() => this.handleShowEditForm(record)}
                >
                  <Icon type="edit" />
                </a>
              </Tooltip>
              <Popconfirm
                title="Are you sure?"
                onConfirm={() => this.handleDeleteRecord(record)}
              >
                <Tooltip title="Delete subscriber" placement="bottom">
                  <a role="button">
                    <Icon type="delete" />
                  </a>
                </Tooltip>
              </Popconfirm>
            </div>
          );
        }
      }
    ];
  }

  componentDidMount() {
    // Load lists on boot.
    this.props
      .modelRequest(cs.ModelLists, cs.Routes.GetLists, cs.MethodGet)
      .then(() => {
        // If this is an individual list's view, pick up that list.
        if (this.state.queryParams.listID) {
          this.props.data[cs.ModelLists].results.forEach(l => {
            if (l.id === this.state.queryParams.listID) {
              this.setState({
                queryParams: { ...this.state.queryParams, list: l }
              });
              return false;
            }
          });
        }
      });

    this.fetchRecords();
  }

  fetchRecords = params => {
    let qParams = {
      page: this.state.queryParams.page,
      per_page: this.state.queryParams.per_page,
      list_id: this.state.queryParams.listID,
      query: this.state.queryParams.query
    };

    // The records are for a specific list.
    if (this.state.queryParams.listID) {
      qParams.list_id = this.state.queryParams.listID;
    }

    if (params) {
      qParams = { ...qParams, ...params };
    }

    this.props
      .modelRequest(
        cs.ModelSubscribers,
        cs.Routes.GetSubscribers,
        cs.MethodGet,
        qParams
      )
      .then(() => {
        this.setState({
          queryParams: {
            ...this.state.queryParams,
            total: this.props.data[cs.ModelSubscribers].total,
            perPage: this.props.data[cs.ModelSubscribers].per_page,
            page: this.props.data[cs.ModelSubscribers].page,
            query: this.props.data[cs.ModelSubscribers].query
          }
        });
      });
  };

  handleDeleteRecord = record => {
    this.props
      .modelRequest(
        cs.ModelSubscribers,
        cs.Routes.DeleteSubscriber,
        cs.MethodDelete,
        { id: record.id }
      )
      .then(() => {
        notification["success"]({
          message: "Subscriber deleted",
          description: `${record.email} deleted`
        });

        // Reload the table.
        this.fetchRecords();
      })
      .catch(e => {
        notification["error"]({ message: "Error", description: e.message });
      });
  };

  handleDeleteRecords = records => {
    this.props
      .modelRequest(
        cs.ModelSubscribers,
        cs.Routes.DeleteSubscribers,
        cs.MethodDelete,
        { id: records.map(r => r.id) }
      )
      .then(() => {
        notification["success"]({
          message: "Subscriber(s) deleted",
          description: "Selected subscribers deleted"
        });

        // Reload the table.
        this.fetchRecords();
      })
      .catch(e => {
        notification["error"]({ message: "Error", description: e.message });
      });
  };

  handleBlacklistSubscribers = records => {
    this.props
      .request(cs.Routes.BlacklistSubscribers, cs.MethodPut, {
        ids: records.map(r => r.id)
      })
      .then(() => {
        notification["success"]({
          message: "Subscriber(s) blacklisted",
          description: "Selected subscribers blacklisted"
        });

        // Reload the table.
        this.fetchRecords();
      })
      .catch(e => {
        notification["error"]({ message: "Error", description: e.message });
      });
  };

  // Arbitrary query based calls.
  handleDeleteRecordsByQuery = (listIDs, query) => {
    this.props
      .modelRequest(
        cs.ModelSubscribers,
        cs.Routes.DeleteSubscribersByQuery,
        cs.MethodPost,
        { list_ids: listIDs, query: query }
      )
      .then(() => {
        notification["success"]({
          message: "Subscriber(s) deleted",
          description: "Selected subscribers have been deleted"
        });

        // Reload the table.
        this.fetchRecords();
      })
      .catch(e => {
        notification["error"]({ message: "Error", description: e.message });
      });
  };

  handleBlacklistSubscribersByQuery = (listIDs, query) => {
    this.props
      .request(cs.Routes.BlacklistSubscribersByQuery, cs.MethodPut, {
        list_ids: listIDs,
        query: query
      })
      .then(() => {
        notification["success"]({
          message: "Subscriber(s) blacklisted",
          description: "Selected subscribers have been blacklisted"
        });

        // Reload the table.
        this.fetchRecords();
      })
      .catch(e => {
        notification["error"]({ message: "Error", description: e.message });
      });
  };

  handleQuerySubscribersIntoLists = (query, sourceList, targetLists) => {
    let params = {
      query: query,
      source_list: sourceList,
      target_lists: targetLists
    };

    this.props
      .request(cs.Routes.QuerySubscribersIntoLists, cs.MethodPost, params)
      .then(res => {
        notification["success"]({
          message: "Subscriber(s) added",
          description: `${res.data.data.count} added`
        });
        this.handleToggleListModal();
      })
      .catch(e => {
        notification["error"]({ message: "Error", description: e.message });
      });
  };

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

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

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

  handleToggleListsForm = () => {
    this.setState({ listsFormVisible: !this.state.listsFormVisible });
  };

  handleSearch = q => {
    q = q.trim().toLowerCase();
    if (q === "") {
      this.fetchRecords({ query: null });
      return;
    }

    q = q.replace(/'/g, "''");
    const query = `(name ~* '${q}' OR email ~* '${q}')`;
    this.fetchRecords({ query: query });
  };

  handleSelectRow = (_, records) => {
    this.setState({ allRowsSelected: false, selectedRows: records });
  };

  handleSelectAllRows = () => {
    this.setState({
      allRowsSelected: true,
      selectedRows: this.props.data[cs.ModelSubscribers].results
    });
  };

  clearSelectedRows = (_, records) => {
    this.setState({ allRowsSelected: false, selectedRows: [] });
  };

  handleToggleQueryForm = () => {
    this.setState({ queryFormVisible: !this.state.queryFormVisible });
  };

  handleToggleListModal = () => {
    this.setState({ listModalVisible: !this.state.listModalVisible });
  };

  render() {
    const pagination = {
      ...this.paginationOptions,
      ...this.state.queryParams
    };

    if (this.state.queryParams.list) {
      this.props.pageTitle(this.state.queryParams.list.name + " / Subscribers");
    } else {
      this.props.pageTitle("Subscribers");
    }

    return (
      <section className="content">
        <header className="header">
          <Row>
            <Col span={20}>
              <h1>
                Subscribers
                {this.props.data[cs.ModelSubscribers].total > 0 && (
                  <span> ({this.props.data[cs.ModelSubscribers].total})</span>
                )}
                {this.state.queryParams.list && (
                  <span> &raquo; {this.state.queryParams.list.name}</span>
                )}
              </h1>
            </Col>
            <Col span={2}>
              <Button
                type="primary"
                icon="plus"
                onClick={this.handleShowCreateForm}
              >
                Add subscriber
              </Button>
            </Col>
          </Row>
        </header>

        <div className="subscriber-query">
          <Row>
            <Col span={10}>
              <Row>
                <Col span={15}>
                  <label>Search subscribers</label>
                  <Input.Search
                    name="name"
                    placeholder="Name or e-mail"
                    enterButton
                    onSearch={this.handleSearch}
                  />{" "}
                </Col>
                <Col span={8} offset={1}>
                  <label>&nbsp;</label>
                  <br />
                  <a role="button" onClick={this.handleToggleQueryForm}>
                    <Icon type="setting" /> Advanced
                  </a>
                </Col>
              </Row>
              {this.state.queryFormVisible && (
                <div className="advanced-query">
                  <p>
                    <label>Advanced query</label>
                    <Input.TextArea
                      placeholder="subscribers.name LIKE '%user%' or subscribers.status='blacklisted'"
                      id="subscriber-query"
                      rows={10}
                      onChange={e => {
                        this.setState({
                          queryParams: {
                            ...this.state.queryParams,
                            query: e.target.value
                          }
                        });
                      }}
                      value={this.state.queryParams.query}
                      autosize={{ minRows: 2, maxRows: 10 }}
                    />
                    <span className="text-tiny text-small">
                      Partial SQL expression to query subscriber attributes.{" "}
                      <a
                        href="https://listmonk.app/docs/querying-and-segmentation"
                        target="_blank"
                        rel="noopener noreferrer"
                      >
                        Learn more <Icon type="link" />.
                      </a>
                    </span>
                  </p>
                  <p>
                    <Button
                      disabled={this.state.queryParams.query === ""}
                      type="primary"
                      icon="search"
                      onClick={() => {
                        this.fetchRecords();
                      }}
                    >
                      Query
                    </Button>{" "}
                    <Button
                      disabled={this.state.queryParams.query === ""}
                      icon="refresh"
                      onClick={() => {
                        this.fetchRecords({ query: null });
                      }}
                    >
                      Reset
                    </Button>
                  </p>
                </div>
              )}
            </Col>
            <Col span={14}>
              {this.state.selectedRows.length > 0 && (
                <nav className="table-options">
                  <p>
                    <strong>
                      {this.state.allRowsSelected
                        ? this.state.queryParams.total
                        : this.state.selectedRows.length}
                    </strong>{" "}
                    subscriber(s) selected
                    {!this.state.allRowsSelected &&
                      this.state.queryParams.total >
                        this.state.queryParams.perPage && (
                        <span>
                          {" "}
                          &mdash;{" "}
                          <a role="button" onClick={this.handleSelectAllRows}>
                            Select all {this.state.queryParams.total}?
                          </a>
                        </span>
                      )}
                  </p>
                  <p>
                    <a role="button" onClick={this.handleToggleListsForm}>
                      <Icon type="bars" /> Manage lists
                    </a>
                    <a role="button">
                      <Icon type="rocket" /> Send campaign
                    </a>
                    <Popconfirm
                      title="Are you sure?"
                      onConfirm={() => {
                        if (this.state.allRowsSelected) {
                          this.handleDeleteRecordsByQuery(
                            this.state.queryParams.listID
                              ? [this.state.queryParams.listID]
                              : [],
                            this.state.queryParams.query
                          );
                          this.clearSelectedRows();
                        } else {
                          this.handleDeleteRecords(this.state.selectedRows);
                          this.clearSelectedRows();
                        }
                      }}
                    >
                      <a role="button">
                        <Icon type="delete" /> Delete
                      </a>
                    </Popconfirm>
                    <Popconfirm
                      title="Are you sure?"
                      onConfirm={() => {
                        if (this.state.allRowsSelected) {
                          this.handleBlacklistSubscribersByQuery(
                            this.state.queryParams.listID
                              ? [this.state.queryParams.listID]
                              : [],
                            this.state.queryParams.query
                          );
                          this.clearSelectedRows();
                        } else {
                          this.handleBlacklistSubscribers(
                            this.state.selectedRows
                          );
                          this.clearSelectedRows();
                        }
                      }}
                    >
                      <a role="button">
                        <Icon type="close" /> Blacklist
                      </a>
                    </Popconfirm>
                  </p>
                </nav>
              )}
            </Col>
          </Row>
        </div>

        <Table
          columns={this.columns}
          rowKey={record => `sub-${record.id}`}
          dataSource={(() => {
            if (
              !this.props.data[cs.ModelSubscribers] ||
              !this.props.data[cs.ModelSubscribers].hasOwnProperty("results")
            ) {
              return [];
            }
            return this.props.data[cs.ModelSubscribers].results;
          })()}
          loading={this.props.reqStates[cs.ModelSubscribers] !== cs.StateDone}
          pagination={pagination}
          rowSelection={{
            columnWidth: "5%",
            onChange: this.handleSelectRow,
            selectedRowKeys: this.state.selectedRows.map(r => `sub-${r.id}`)
          }}
        />

        {this.state.formType !== null && (
          <Modal
            visible={true}
            width="750px"
            className="subscriber-modal"
            okText={this.state.form === cs.FormCreate ? "Add" : "Save"}
            confirmLoading={this.state.modalWaiting}
            onOk={e => {
              if (!this.state.modalForm) {
                return;
              }

              // This submits the form embedded in the Subscriber component.
              this.state.modalForm.submitForm(e, ok => {
                if (ok) {
                  this.handleHideForm();
                  this.fetchRecords();
                }
              });
            }}
            onCancel={this.handleHideForm}
            okButtonProps={{
              disabled:
                this.props.reqStates[cs.ModelSubscribers] === cs.StatePending
            }}
          >
            <Subscriber
              {...this.props}
              isModal={true}
              formType={this.state.formType}
              record={this.state.record}
              ref={r => {
                if (!r) {
                  return;
                }

                this.setState({ modalForm: r });
              }}
            />
          </Modal>
        )}

        {this.state.listsFormVisible && (
          <ListsForm
            {...this.props}
            lists={this.props.data[cs.ModelLists].results}
            allRowsSelected={this.state.allRowsSelected}
            selectedRows={this.state.selectedRows}
            selectedLists={
              this.state.queryParams.listID
                ? [this.state.queryParams.listID]
                : []
            }
            clearSelectedRows={this.clearSelectedRows}
            query={this.state.queryParams.query}
            fetchRecords={this.fetchRecords}
            onClose={this.handleToggleListsForm}
          />
        )}
      </section>
    );
  }
}

export default Subscribers;