// Copyright (C) 2023 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

import m from 'mithril';
import {copyToClipboard} from '../../base/clipboard';
import {Icons} from '../../base/semantic_icons';
import {exists} from '../../base/utils';
import {Button, ButtonBar} from '../../widgets/button';
import {DetailsShell} from '../../widgets/details_shell';
import {Popup, PopupPosition} from '../../widgets/popup';
import {AddDebugTrackMenu} from '../tracks/add_debug_track_menu';
import {SqlTableState} from '../widgets/sql/table/state';
import {SqlTable} from '../widgets/sql/table/table';
import {SqlTableDescription} from '../widgets/sql/table/table_description';
import {Trace} from '../../public/trace';
import {MenuItem, PopupMenu} from '../../widgets/menu';
import {addEphemeralTab} from './add_ephemeral_tab';
import {Tab} from '../../public/tab';
import {addChartTab} from '../widgets/charts/chart_tab';
import {ChartType} from '../widgets/charts/chart';
import {AddChartMenuItem} from '../widgets/charts/add_chart_menu';
import {Filter, Filters, renderFilters} from '../widgets/sql/table/filters';
import {PivotTableState} from '../widgets/sql/pivot_table/pivot_table_state';
import {TableColumn} from '../widgets/sql/table/table_column';
import {PivotTable} from '../widgets/sql/pivot_table/pivot_table';
import {pivotId} from '../widgets/sql/pivot_table/ids';

export interface AddSqlTableTabParams {
  table: SqlTableDescription;
  filters?: Filter[];
  imports?: string[];
}

export function addLegacyTableTab(
  trace: Trace,
  config: AddSqlTableTabParams,
): void {
  addSqlTableTabWithState(
    new SqlTableState(trace, config.table, {
      filters: new Filters(config.filters),
      imports: config.imports,
    }),
  );
}

function addSqlTableTabWithState(state: SqlTableState) {
  addEphemeralTab('sqlTable', new LegacySqlTableTab(state));
}

class LegacySqlTableTab implements Tab {
  constructor(private readonly state: SqlTableState) {
    this.selected = state;
  }

  private selected: SqlTableState | PivotTableState;

  private pivots: PivotTableState[] = [];

  private getTableButtons() {
    const range = this.state.getDisplayedRange();
    const rowCount = this.state.getTotalRowCount();
    const navigation = [
      exists(range) &&
        exists(rowCount) &&
        `Showing rows ${range.from}-${range.to} of ${rowCount}`,
      m(Button, {
        icon: Icons.GoBack,
        disabled: !this.state.canGoBack(),
        onclick: () => this.state.goBack(),
      }),
      m(Button, {
        icon: Icons.GoForward,
        disabled: !this.state.canGoForward(),
        onclick: () => this.state.goForward(),
      }),
    ];
    const {selectStatement, columns} = this.state.getCurrentRequest();
    const debugTrackColumns = Object.values(columns).filter(
      (c) => !c.startsWith('__'),
    );
    const addDebugTrack = m(
      Popup,
      {
        trigger: m(Button, {label: 'Show debug track'}),
        position: PopupPosition.Top,
      },
      m(AddDebugTrackMenu, {
        trace: this.state.trace,
        dataSource: {
          sqlSource: `SELECT ${debugTrackColumns.join(', ')} FROM (${selectStatement})`,
          columns: debugTrackColumns,
        },
      }),
    );
    return [
      ...navigation,
      addDebugTrack,
      m(
        PopupMenu,
        {
          trigger: m(Button, {
            icon: Icons.Menu,
          }),
        },
        m(MenuItem, {
          label: 'Duplicate',
          icon: 'tab_duplicate',
          onclick: () => addSqlTableTabWithState(this.state.clone()),
        }),
        m(MenuItem, {
          label: 'Copy SQL query',
          icon: Icons.Copy,
          onclick: () => copyToClipboard(this.state.getNonPaginatedSQLQuery()),
        }),
      ),
    ];
  }

  private tableMenuItems(column: TableColumn, alias: string) {
    const chartAttrs = {
      data: this.state.nonPaginatedData?.rows,
      columns: [alias],
    };

    return [
      m(AddChartMenuItem, {
        chartOptions: [
          {
            chartType: ChartType.BAR_CHART,
            ...chartAttrs,
          },
          {
            chartType: ChartType.HISTOGRAM,
            ...chartAttrs,
          },
        ],
        addChart: (chart) => addChartTab(chart),
      }),
      m(MenuItem, {
        label: 'Pivot',
        onclick: () => {
          const state = new PivotTableState({
            pivots: [column],
            table: this.state.config,
            trace: this.state.trace,
            filters: this.state.filters,
          });
          this.selected = state;
          this.pivots.push(state);
        },
      }),
    ];
  }

  render() {
    return m(
      DetailsShell,
      {
        title: 'Table',
        description: this.getDisplayName(),
        buttons: this.getTableButtons(),
      },
      m('div', renderFilters(this.state.filters)),
      this.pivots.length > 0 &&
        m(
          ButtonBar,
          m(Button, {
            label: 'Table',
            active: this.selected === this.state,
            onclick: () => {
              this.selected = this.state;
            },
          }),
          this.pivots.map((pivot) =>
            m(Button, {
              label: `Pivot: ${pivot.getPivots().map(pivotId).join(', ')}`,
              active: this.selected === pivot,
              onclick: () => {
                this.selected = pivot;
              },
            }),
          ),
        ),
      this.selected === this.state &&
        m(SqlTable, {
          state: this.state,
          addColumnMenuItems: this.tableMenuItems.bind(this),
        }),
      this.selected instanceof PivotTableState &&
        m(PivotTable, {
          state: this.selected,
          extraRowButton: (node) =>
            // Do not show any buttons for root as it doesn't have any filters anyway.
            !node.isRoot() &&
            m(
              PopupMenu,
              {
                trigger: m(Button, {
                  icon: Icons.GoTo,
                }),
              },
              m(MenuItem, {
                label: 'Add filters',
                onclick: () => {
                  this.state.filters.addFilters(node.getFilters());
                },
              }),
              m(MenuItem, {
                label: 'Open tab with filters',
                onclick: () => {
                  const newState = this.state.clone();
                  newState.filters.addFilters(node.getFilters());
                  addSqlTableTabWithState(newState);
                },
              }),
            ),
        }),
    );
  }

  getTitle(): string {
    const rowCount = this.state.getTotalRowCount();
    const rows = rowCount === undefined ? '' : ` (${rowCount})`;
    return `Table ${this.getDisplayName()}${rows}`;
  }

  private getDisplayName(): string {
    return this.state.config.displayName ?? this.state.config.name;
  }

  isLoading(): boolean {
    return this.state.isLoading();
  }
}