ballista-cli 55.0.0

Command Line Client for Ballista distributed query engine.
Documentation 
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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you 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.

use crate::tui::app::App;
use crate::tui::domain::jobs::PlanTab;
use ratatui::Frame;
use ratatui::layout::{Constraint, Direction, Layout, Rect};
use ratatui::text::{Line, Span};
use ratatui::widgets::Paragraph;

pub(super) fn render_footer(f: &mut Frame, area: Rect, app: &App) {
    let mut current_view_key_bindings = Vec::with_capacity(10);
    let mut global_key_bindings = Vec::with_capacity(10);

    if app.is_edit_mode() {
        current_view_key_bindings.push(Span::from("[Esc] Quit edit mode"));
    } else {
        global_key_bindings.push(Span::from("Global key bindings: "));

        if app.is_scheduler_up() {
            global_key_bindings.push(Span::from("[j] Jobs, "));
            global_key_bindings.push(Span::from("[e] Executors, "));
            global_key_bindings.push(Span::from("[m] Metrics, "));

            if app.is_jobs_view() {
                if app.job_dot_popup.is_some() {
                    current_view_key_bindings.push(Span::from("[↑↓←→] Scroll, "));
                    current_view_key_bindings.push(Span::from("[Esc] Close popup, "));
                } else if app.job_plan_popup.is_some() {
                    current_view_key_bindings.push(Span::from("[↑↓←→] Scroll, "));
                    current_view_key_bindings.push(Span::from("[s] Stage plan, "));
                    current_view_key_bindings.push(Span::from("[p] Physical plan, "));
                    if let Some(popup) = app.job_plan_popup.as_ref()
                        && popup.get_tab() == &PlanTab::Physical
                    {
                        current_view_key_bindings
                            .push(Span::from("[d] Default format, "));
                        current_view_key_bindings.push(Span::from("[t] Tree format, "));
                    }
                    current_view_key_bindings.push(Span::from("[l] Logical plan, "));
                    current_view_key_bindings.push(Span::from("[Esc] Close popup, "));
                } else if app.is_job_config_popup_open() {
                    current_view_key_bindings.push(Span::from("[↑↓] Navigate, "));
                    current_view_key_bindings.push(Span::from("[/] Search config, "));
                    current_view_key_bindings.push(Span::from("[Esc] Close popup, "));
                } else {
                    if app.has_selected_job() {
                        if !app.is_job_stages_popup_open() {
                            if app.has_more_than_one_job() {
                                current_view_key_bindings
                                    .push(Span::from("[↑↓] Navigate, "));
                                current_view_key_bindings
                                    .push(Span::from("[/] Search jobs, "));
                                current_view_key_bindings.push(Span::from(
                                    "[1,2,3] Sort by first/second/third/... column, ",
                                ));
                            }
                            current_view_key_bindings
                                .push(Span::from("[Enter] View stages, "));
                            current_view_key_bindings
                                .push(Span::from("[g] View job stages graph, "));
                            current_view_key_bindings
                                .push(Span::from("[o] View job config, "));

                            if app.is_selected_job_cancelable() {
                                current_view_key_bindings
                                    .push(Span::from("[c] Cancel job, "));
                            }

                            if app.does_job_have_plan() {
                                current_view_key_bindings
                                    .push(Span::from("[p] View job plans, "));
                            }
                        } else if app.is_job_stage_no_details_popup_open() {
                            current_view_key_bindings.push(Span::from("[↑↓] Navigate, "));
                            current_view_key_bindings
                                .push(Span::from("[Enter] View tasks, "));
                            current_view_key_bindings.push(Span::from("[p] View plan, "));
                            current_view_key_bindings
                                .push(Span::from("[Esc] Close popup, "));
                        } else if app.is_job_stage_plan_popup_open() {
                            current_view_key_bindings.push(Span::from("[↑↓←→] Scroll, "));
                            current_view_key_bindings
                                .push(Span::from("[d] Default format, "));
                            current_view_key_bindings
                                .push(Span::from("[t] Tree format, "));
                            current_view_key_bindings
                                .push(Span::from("[m] Show metrics, "));
                            current_view_key_bindings
                                .push(Span::from("[Esc] Close popup, "));
                        } else if app.is_job_stage_tasks_popup_open() {
                            current_view_key_bindings.push(Span::from("[↑↓] Navigate, "));
                            current_view_key_bindings
                                .push(Span::from("[Esc] Close popup, "));
                        }
                    } else if app.has_more_than_one_job() {
                        current_view_key_bindings.push(Span::from("[↑↓] Navigate, "));
                        current_view_key_bindings.push(Span::from("[/] Search jobs, "));
                        current_view_key_bindings.push(Span::from(
                            "[1,2,3] Sort by first/second/third/... column, ",
                        ));
                    }
                }
                if !current_view_key_bindings.is_empty() {
                    current_view_key_bindings
                        .insert(0, Span::from("Current view key bindings: "));
                }
            } else if app.is_executors_view() {
                if app.is_executor_details_popup_open() {
                    current_view_key_bindings.push(Span::from("[↑↓] Scroll up/down, "));
                    current_view_key_bindings.push(Span::from("[Esc] Close popup, "));
                } else {
                    if app.has_selected_executor() {
                        current_view_key_bindings
                            .push(Span::from("[Enter] View details, "));
                    }
                    current_view_key_bindings.push(Span::from("[↑↓] Navigate, "));
                    current_view_key_bindings
                        .push(Span::from("[1,2,...] Sort by first/second/... column, "));
                }
                if !current_view_key_bindings.is_empty() {
                    current_view_key_bindings
                        .insert(0, Span::from("Current view key bindings: "));
                }
            } else if app.is_metrics_view() {
                current_view_key_bindings.push(Span::from("Metrics key bindings: "));
                current_view_key_bindings.push(Span::from("[/] Search metrics, "));
            }
            global_key_bindings.push(Span::from("[i] Scheduler info, "));
        }

        global_key_bindings.push(Span::from("[?/h] Help, "));
        global_key_bindings.push(Span::from("[q/Esc] Quit"));
    }

    let global_area = if !current_view_key_bindings.is_empty() {
        let areas = Layout::default()
            .direction(Direction::Vertical)
            .constraints([
                Constraint::Min(1), // page keybindings
                Constraint::Min(1), // global keybindings
            ])
            .split(area);

        let paragraph = Paragraph::new(Line::from(current_view_key_bindings))
            .style(app.theme.footer)
            .centered();
        f.render_widget(paragraph, areas[0]);

        areas[1]
    } else {
        area
    };

    let paragraph = Paragraph::new(Line::from(global_key_bindings))
        .style(app.theme.footer)
        .centered();
    f.render_widget(paragraph, global_area);
}