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

#[cfg(test)]
mod test;

use bson::Document;

use crate::{
    bson::doc,
    cmap::{Command, RawCommandResponse, StreamDescription},
    error::Result,
    operation::{
        append_options,
        remove_empty_write_concern,
        OperationWithDefaults,
        WriteConcernOnlyBody,
    },
    options::{CreateCollectionOptions, WriteConcern},
    Namespace,
};

#[derive(Debug)]
pub(crate) struct Create {
    ns: Namespace,
    options: Option<CreateCollectionOptions>,
}

impl Create {
    #[cfg(test)]
    fn empty() -> Self {
        Self::new(
            Namespace {
                db: String::new(),
                coll: String::new(),
            },
            None,
        )
    }

    pub(crate) fn new(ns: Namespace, options: Option<CreateCollectionOptions>) -> Self {
        Self { ns, options }
    }
}

impl OperationWithDefaults for Create {
    type O = ();
    type Command = Document;

    const NAME: &'static str = "create";

    fn build(&mut self, _description: &StreamDescription) -> Result<Command> {
        let mut body = doc! {
            Self::NAME: self.ns.coll.clone(),
        };

        remove_empty_write_concern!(self.options);
        append_options(&mut body, self.options.as_ref())?;

        Ok(Command::new(
            Self::NAME.to_string(),
            self.ns.db.clone(),
            body,
        ))
    }

    fn handle_response(
        &self,
        response: RawCommandResponse,
        _description: &StreamDescription,
    ) -> Result<Self::O> {
        let response: WriteConcernOnlyBody = response.body()?;
        response.validate()
    }

    fn write_concern(&self) -> Option<&WriteConcern> {
        self.options
            .as_ref()
            .and_then(|opts| opts.write_concern.as_ref())
    }
}