/*
Copyright (C) 2017  Cloudbase Solutions SRL
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

import * as React from "react";
import { observer } from "mobx-react";
import styled from "styled-components";

import Button from "@src/components/ui/Button";
import FieldInput from "@src/components/ui/FieldInput";
import ToggleButtonBar from "@src/components/ui/ToggleButtonBar";

import type { Field } from "@src/@types/Field";

import { ThemeProps } from "@src/components/Theme";

import LabelDictionary from "@src/utils/LabelDictionary";

import assessmentImage from "./images/assessment.svg";

const Wrapper = styled.div<any>`
  padding: 48px 32px 32px 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 0;
`;
const Image = styled.div<any>`
  width: 96px;
  height: 96px;
  background: url("${assessmentImage}") center no-repeat;
`;
const ToggleButtonBarStyled = styled(ToggleButtonBar)`
  margin-top: 48px;
`;
const Fields = styled.div<any>`
  display: flex;
  margin-top: 32px;
  flex-direction: column;
  overflow: auto;
  width: 100%;
  min-height: 0;
`;
const FieldStyled = styled(FieldInput)`
  ${ThemeProps.exactWidth(`${ThemeProps.inputSizes.large.width}px`)}
  margin-bottom: 16px;
`;
const Row = styled.div<any>`
  display: flex;
  flex-shrink: 0;
  justify-content: space-between;
`;

const Buttons = styled.div<any>`
  display: flex;
  justify-content: space-between;
  width: 100%;
  margin-top: 32px;
`;

const generalFields = [
  {
    name: "use_replica",
    type: "boolean",
  },
  {
    name: "separate_vm",
    type: "boolean",
  },
];
const replicaFields = [
  {
    name: "shutdown_instances",
    type: "boolean",
  },
];
const migrationFields = [
  {
    name: "skip_os_morphing",
    type: "boolean",
  },
];

type Props = {
  onCancelClick: () => void;
  onExecuteClick: (fieldValues: { [prop: string]: any }) => void;
  executeButtonDisabled: boolean;
  replicaSchema: Field[];
  migrationSchema: Field[];
  onResizeUpdate?: (scrollableRef: HTMLElement, scrollOffset?: number) => void;
};
type State = {
  fieldValues: { [prop: string]: any };
  showAdvancedOptions: boolean;
};
@observer
class AssessmentMigrationOptions extends React.Component<Props, State> {
  state: State = {
    fieldValues: {
      separate_vm: true,
      use_replica: false,
      shutdown_instances: false,
      skip_os_morphing: false,
    },
    showAdvancedOptions: false,
  };

  // scrollableRef: HTMLElement | undefined | null

  getFieldValue(fieldName: string) {
    if (this.state.fieldValues[fieldName] != null) {
      return this.state.fieldValues[fieldName];
    }
    return null;
  }

  getObjectFieldValue(fieldName: string, propName: string) {
    return (
      this.state.fieldValues[fieldName] &&
      this.state.fieldValues[fieldName][propName]
    );
  }

  handleValueChange(fieldName: string, value: any) {
    this.setState(prevState => {
      const fieldValues = { ...prevState.fieldValues };
      if (value != null) {
        fieldValues[fieldName] = value;
      } else {
        delete fieldValues[fieldName];
      }
      return { fieldValues };
    });
  }

  // UNSAFE_componentDidUpdate(_: Props, prevState: State) {
  //   if (prevState.showAdvancedOptions !== this.state.showAdvancedOptions
  //     && this.props.onResizeUpdate && this.scrollableRef) {
  //     this.props.onResizeUpdate(this.scrollableRef)
  //   }
  // }

  handleObjectValueChange(fieldName: string, propName: string, value: any) {
    this.setState(prevState => {
      const fieldValues = { ...prevState.fieldValues };
      if (!fieldValues[fieldName]) {
        fieldValues[fieldName] = {};
      }
      fieldValues[fieldName][propName] = value;
      return { fieldValues };
    });
  }

  renderFields() {
    let fields: any = generalFields;
    const useReplica = this.getFieldValue("use_replica");
    const skipFields = [
      "location",
      "resource_group",
      "network_map",
      "storage_map",
      "vm_size",
      "worker_size",
    ];
    // eslint-disable-next-line no-shadow
    const cleanup = (cleanupFields: any[]) =>
      cleanupFields
        .filter((f: { name: string }) => !skipFields.find(n => n === f.name))
        .map((f: { type: string; nullableBoolean: boolean }) => {
          if (f.type === "boolean") {
            // eslint-disable-next-line no-param-reassign
            f.nullableBoolean = true;
          }
          return { ...f };
        });

    if (useReplica) {
      fields = [...fields, ...replicaFields];
      if (this.state.showAdvancedOptions) {
        fields = [...fields, ...cleanup(this.props.replicaSchema)];
      }
    } else {
      fields = [...fields, ...migrationFields];
      if (this.state.showAdvancedOptions) {
        fields = [...fields, ...cleanup(this.props.migrationSchema)];
      }
    }

    const sortPriority: any = {
      boolean: 1,
      string: 2,
      object: 3,
    };
    fields.sort((a: any, b: any) => {
      if (sortPriority[a.type] && sortPriority[b.type]) {
        return sortPriority[a.type] - sortPriority[b.type];
      }
      if (sortPriority[a.type]) {
        return -1;
      }
      if (sortPriority[b.type]) {
        return 1;
      }
      return a.name.localeCompare(b.name);
    });

    const rows: JSX.Element[] = [];
    let lastField: JSX.Element;
    fields.forEach((field: any, index: number) => {
      let additionalProps;
      if (field.type === "object" && field.properties) {
        additionalProps = {
          valueCallback: (callbackField: { name: string }) =>
            this.getObjectFieldValue(field.name, callbackField.name),
          onChange: (value: any, callbackField: { name: string }) => {
            const propName = callbackField.name.substr(
              callbackField.name.lastIndexOf("/") + 1
            );
            this.handleObjectValueChange(field.name, propName, value);
          },
          properties: field.properties.map((p: any) => ({
            ...p,
            required: false,
          })),
        };
      } else {
        const value = this.getFieldValue(field.name);
        additionalProps = {
          value,
          // eslint-disable-next-line no-shadow
          onChange: (changeValue: any) => {
            this.handleValueChange(field.name, changeValue);
          },
          type: field.type,
        };
      }

      const currentField = (
        <FieldStyled
          width={ThemeProps.inputSizes.large.width}
          // eslint-disable-next-line react/jsx-props-no-spreading
          {...field}
          // eslint-disable-next-line react/jsx-props-no-spreading
          {...additionalProps}
          label={field.label || LabelDictionary.get(field.name)}
        />
      );
      const pushRow = (field1: React.ReactNode, field2?: React.ReactNode) => {
        rows.push(
          <Row key={field.name}>
            {field1}
            {field2}
          </Row>
        );
      };
      if (index === fields.length - 1 && index % 2 === 0) {
        pushRow(currentField);
      } else if (index % 2 !== 0) {
        pushRow(lastField, currentField);
      } else {
        lastField = currentField;
      }
    });

    return (
      // <Fields ref={(ref: HTMLElement | null | undefined) => { this.scrollableRef = ref }}>
      <Fields>{rows}</Fields>
    );
  }

  render() {
    return (
      <Wrapper>
        <Image />
        <ToggleButtonBarStyled
          items={[
            { label: "Basic", value: "basic" },
            { label: "Advanced", value: "advanced" },
          ]}
          selectedValue={this.state.showAdvancedOptions ? "advanced" : "basic"}
          onChange={item => {
            this.setState({ showAdvancedOptions: item.value === "advanced" });
          }}
        />
        {this.renderFields()}
        <Buttons>
          <Button
            large
            secondary
            onClick={() => {
              this.props.onCancelClick();
            }}
          >
            Cancel
          </Button>
          <Button
            large
            onClick={() => {
              this.props.onExecuteClick(this.state.fieldValues);
            }}
            disabled={this.props.executeButtonDisabled}
          >
            Execute
          </Button>
        </Buttons>
      </Wrapper>
    );
  }
}

export default AssessmentMigrationOptions;