import React, { ReactElement, useCallback, useContext } from "react";
import { Form, Field } from "react-final-form";
import { useDispatch } from "react-redux";
import { saveSettings, deleteSettings } from "../../actions/settings.actions";
import { AirDCPPSettingsConfirmation } from "./AirDCPPSettingsConfirmation";
import { AirDCPPSocketContext } from "../../context/AirDCPPSocket";
import { isUndefined, isEmpty, isNil } from "lodash";

export const AirDCPPSettingsForm = (): ReactElement => {
  const dispatch = useDispatch();
  const airDCPPSettings = useContext(AirDCPPSocketContext);

  const hostValidator = (hostname: string): string | null => {
    const hostnameRegex = /[\W]+/gm;
    try {
      if (!isUndefined(hostname)) {
        const matches = hostname.match(hostnameRegex);
        return (isNil(matches) && matches.length !== 0) ? hostname : "Invalid hostname; it should not contain special characters";
      }
    }
    catch {
      return null;
    }
  }
  
  const onSubmit = useCallback(async (values) => {
    try {
      airDCPPSettings.setSettings(values);
      dispatch(
        saveSettings({
          host: values,
        }),
      );
    } catch (error) {
      console.log(error);
    }
  }, []);
  const removeSettings = useCallback(async () => {
    airDCPPSettings.setSettings({});
    dispatch(deleteSettings());
  }, []);
  const validate = async () => { };
  const initFormData = !isUndefined(
    airDCPPSettings.airDCPPState.settings.directConnect,
  )
    ? airDCPPSettings.airDCPPState.settings.directConnect.client.host
    : {};

  return (
    <>
      <Form
        onSubmit={onSubmit}
        validate={validate}
        initialValues={initFormData}
        render={({ handleSubmit }) => (
          <form onSubmit={handleSubmit}>
            <h2>AirDC++ Connection Information</h2>
            <label className="label">AirDC++ Hostname</label>
            <div className="field has-addons">
              <p className="control">
                <span className="select">
                  <Field name="protocol" component="select">
                    <option>Protocol</option>
                    <option value="http">http://</option>
                    <option value="https">https://</option>
                  </Field>
                </span>
              </p>
              <div className="control is-expanded">
                <Field
                  name="hostname"
                  validate={hostValidator}>
                  {({ input, meta }) => (
                    <div>
                      <input {...input} type="text" placeholder="AirDC++ hostname" className="input" />
                      {meta.error && meta.touched && <span className="is-size-7 has-text-danger">{meta.error}</span>}
                    </div>
                  )}
                </Field>
              </div>
              <p className="control">
                <Field
                  name="port"
                  component="input"
                  className="input"
                  placeholder="AirDC++ port"
                />
              </p>
            </div>
            <div className="field">
              <div className="is-clearfix">
                <label className="label">Credentials</label>
              </div>
              <div className="field-body">
                <div className="field">
                  <p className="control is-expanded has-icons-left">
                    <Field
                      name="username"
                      component="input"
                      className="input"
                      placeholder="Username"
                    />
                    <span className="icon is-small is-left">
                      <i className="fa-solid fa-user-ninja"></i>
                    </span>
                  </p>
                </div>
                <div className="field">
                  <p className="control is-expanded has-icons-left has-icons-right">
                    <Field
                      name="password"
                      component="input"
                      type="password"
                      className="input"
                      placeholder="Password"
                    />
                    <span className="icon is-small is-left">
                      <i className="fa-solid fa-lock"></i>
                    </span>
                    <span className="icon is-small is-right">
                      <i className="fas fa-check"></i>
                    </span>
                  </p>
                </div>
              </div>
            </div>
            <div className="field is-grouped">
              <p className="control">
                <button type="submit" className="button is-primary">
                  {!isEmpty(initFormData) ? "Update" : "Save"}
                </button>
              </p>
            </div>
          </form>
        )}
      />
      {!isEmpty(airDCPPSettings.airDCPPState.socketConnectionInformation) ? (
        <AirDCPPSettingsConfirmation
          settings={airDCPPSettings.airDCPPState.socketConnectionInformation}
        />
      ) : null}

      {!isEmpty(airDCPPSettings.airDCPPState.socketConnectionInformation) ? (
        <p className="control mt-4">
          <button className="button is-danger" onClick={removeSettings}>
            Delete
          </button>
        </p>
      ) : null}
    </>
  );
};

export default AirDCPPSettingsForm;