1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153

//!
//! Module for progress bar addition to searches.
//!
//! Add with `--progress-bar` in `goat-cli search` and
//! `goat-cli newick`.

use anyhow::{bail, ensure, Result};
use async_std::task;
use futures::StreamExt;
use indicatif;
use reqwest;
use reqwest::header::ACCEPT;
use serde_json::Value;
use std::time::Duration;

use crate::utils::cli_matches;
use crate::{count, IndexType};
use crate::{GOAT_URL, UPPER_CLI_SIZE_LIMIT};

// a function to create and display a progress bar
// for large requests. Currently limited to single large requests.

/// Adds a progress bar to large requests.
pub async fn progress_bar(
    matches: &clap::ArgMatches,
    api: &str,
    unique_ids: Vec<String>,
    index_type: IndexType,
) -> Result<()> {
    // wait briefly before submitting
    // so we are sure the API has recieved and set the queryId
    task::sleep(Duration::from_secs(2)).await;
    // TODO: clean this up.
    let (size_int, _url_vector, url_vector_api) = match api {
        // doesn't matter what is in the vecs, they just need to be length 1
        // as newick only supports single url calls right now.
        // this is really bad coding...
        "newick" => (0u64, vec!["init".to_string()], vec!["init".to_string()]),
        other => cli_matches::process_cli_args(matches, other, unique_ids.clone(), index_type)?,
    };

    ensure!(
        unique_ids.len() == url_vector_api.len(),
        "No reason these lengths should be different."
    );

    let concurrent_requests = url_vector_api.len();

    // should be fine to always unwrap this
    let no_query_hits = count::count(matches, false, false, unique_ids.clone(), index_type)
        .await?
        .unwrap();
    // might need tweaking...
    // special case newick
    if api != "newick" {
        // I think these actually need to be
        // 10,000... but that's our upper limit for search
        if no_query_hits < 10000 || size_int < 10000 {
            return Ok(());
        }
    }

    // add the query ID's to a vec
    let mut query_id_vec = Vec::new();
    for i in unique_ids.iter().take(concurrent_requests) {
        let query_id = format!("{}progress?queryId=goat_cli_{}", *GOAT_URL, i);
        query_id_vec.push(query_id);
    }

    // we want to wrap this in a loop
    // and break when sum(progress_x) == sum(progress_total)
    let bar = indicatif::ProgressBar::new(512);
    let bar_style = ("█▓▓▒░░░ ", "magenta");
    bar.set_style(
        indicatif::ProgressStyle::default_bar()
            .template(&format!(
                "{{prefix:.bold}}▕{{bar:57.{}}}▏{{pos}}/{{len}} {{wide_msg}}",
                bar_style.1
            ))?
            .progress_chars(bar_style.0),
    );
    bar.set_prefix("Fetching from GoaT: ");

    loop {
        // main body
        let fetches =
            futures::stream::iter(query_id_vec.clone().into_iter().map(|path| async move {
                // possibly make a again::RetryPolicy
                // to catch all the values in a *very* large request.
                let client = reqwest::Client::new();

                match again::retry(|| client.get(&path).header(ACCEPT, "application/json").send())
                    .await
                {
                    Ok(resp) => match resp.text().await {
                        Ok(body) => {
                            let v: Value = serde_json::from_str(&body)?;

                            match &v["progress"] {
                                Value::Object(_o) => {
                                    let progress_total = v["progress"]["total"].as_u64();
                                    let progress_x = v["progress"]["x"].as_u64();
                                    Ok(Some((progress_x, progress_total)))
                                }
                                _ => Ok(None),
                            }
                        }
                        Err(_) => bail!("ERROR reading {}", path),
                    },
                    Err(_) => bail!("ERROR downloading {}", path),
                }
            }))
            .buffered(concurrent_requests)
            // complicated. Each u64 can be an option, as some
            // queries will finish before others
            // entire tuple is an option, as other progress enums evaluate to None.
            .collect::<Vec<Result<Option<(Option<u64>, Option<u64>)>>>>();

        let awaited_fetches = fetches.await;
        // what's going on here?
        let progress_total: Result<Vec<_>, _> = awaited_fetches.into_iter().collect();

        let mut progress_x_total = 0;
        let mut progress_total_total = 0;
        for el in progress_total.unwrap() {
            let x_tot_tup = match el {
                Some(t) => t,
                None => (None, None),
            };
            progress_x_total += x_tot_tup.0.unwrap_or(0);
            progress_total_total += x_tot_tup.1.unwrap_or(0);
        }

        // special case newick
        match api {
            "newick" => bar.set_length(progress_total_total),
            _ => match progress_total_total > *UPPER_CLI_SIZE_LIMIT as u64 {
                true => bar.set_length(size_int),
                false => bar.set_length(progress_total_total),
            },
        }

        bar.set_position(progress_x_total);

        if progress_x_total >= progress_total_total {
            break;
        }

        task::sleep(Duration::from_millis(1)).await;
    }

    Ok(())
}