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

use crate::coauthor_repo::CoauthorRepo;
use crate::commands::{coauthor::Coauthor, mob::Mob};
use clap::{Parser, Subcommand};
use std::error::Error;
use std::io::Write;
use std::str;

#[derive(Parser)]
#[command(
    author,
    version,
    about,
    long_about,
    bin_name = "git mob",
    override_usage = "git mob [COMMAND] [OPTIONS]"
)]
#[command(propagate_version = true)]
/// A CLI app which can help users automatically add co-author(s) to git commits
/// for pair/mob programming.
///
/// A user can attribute a git commit to more than one author by adding one or more
/// Co-authored-by trailers to the commit's message.
/// Co-authored commits are visible on GitHub.
/// This CLI app will helper users do the this automatically and also help them
/// store and manage co-authors for pair/mob programming sessions.
///
/// Usage example:
///
/// git mob co-author --add lm "Leo Messi" leo.messi@example.com
///
/// git pair with
struct Cli {
    #[command(subcommand)]
    command: Option<Commands>,
    #[command(flatten)]
    mob: Mob,
}

#[derive(Subcommand)]
enum Commands {
    /// Add/delete/list co-author(s) from co-author repository
    ///
    /// User must store co-author(s) to co-author repository by using keys
    /// (usually initials) before starting pair/mob programming session(s).
    Coauthor(Coauthor),
}

pub fn run(
    coauthor_repo: &impl CoauthorRepo,
    out: &mut impl Write,
    err: &mut impl Write,
) -> Result<(), Box<dyn Error>> {
    let cli = Cli::parse();
    run_inner(&cli, coauthor_repo, out, err)
}

fn run_inner(
    cli: &Cli,
    coauthor_repo: &impl CoauthorRepo,
    out: &mut impl Write,
    err: &mut impl Write,
) -> Result<(), Box<dyn Error>> {
    match &cli.command {
        None => cli.mob.handle(coauthor_repo, out, err)?,
        Some(Commands::Coauthor(coauthor)) => coauthor.handle(coauthor_repo, out, err)?,
    }
    Ok(())
}

#[cfg(test)]
mod tests {
    use std::error::Error;

    use super::*;
    use crate::coauthor_repo::MockCoauthorRepo;
    use mockall::predicate;

    #[test]
    fn test_clear_mob_session() -> Result<(), Box<dyn Error>> {
        let mut mock_coauthor_repo = MockCoauthorRepo::new();
        mock_coauthor_repo
            .expect_clear_mob()
            .once()
            .returning(|| Ok(()));

        let cli = Cli {
            command: None,
            mob: Mob {
                with: None,
                clear: true,
                list: false,
                trailers: false,
            },
        };

        let mut out = Vec::new();
        let mut err = Vec::new();
        run_inner(&cli, &mock_coauthor_repo, &mut out, &mut err)?;

        Ok(())
    }

    #[test]
    fn test_delete_coauthor() -> Result<(), Box<dyn Error>> {
        let key = "lm";
        let mut mock_coauthor_repo = MockCoauthorRepo::new();
        mock_coauthor_repo
            .expect_get()
            .with(predicate::eq(key))
            .once()
            .returning(|_| Ok(Some("Leo Messi <leo.messi@example.com>".to_owned())));
        mock_coauthor_repo
            .expect_remove()
            .with(predicate::eq(key))
            .once()
            .returning(|_| Ok(()));

        let cli = Cli {
            command: Some(Commands::Coauthor(Coauthor {
                delete: Some(key.to_owned()),
                add: None,
                list: false,
            })),
            mob: Mob {
                with: None,
                clear: false,
                list: false,
                trailers: false,
            },
        };

        let mut out = Vec::new();
        let mut err = Vec::new();
        run_inner(&cli, &mock_coauthor_repo, &mut out, &mut err)?;

        Ok(())
    }
}