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use serde::{Deserialize, Serialize};
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use crate::{

            

        

            

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    commands::{CommandResponse, ResponseParserError, empty_command_request},

            

        

            

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    response_tokenizer::{ResponseAttributes, expect_property_type},

            

        

            

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    types::ChannelName,

            

        

            

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};

            

        

            

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empty_command_request!(ReadMessages, "readmessages");

            

        

            

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#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]

            

        

            

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pub struct ReadMessagesResponse(Vec<ReadMessagesResponseEntry>);

            

        

            

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impl ReadMessagesResponse {

            

        

            

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    pub fn new(entries: Vec<ReadMessagesResponseEntry>) -> Self {

            

        

            

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        ReadMessagesResponse(entries)

            

        

            

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    }

            

        

            

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}

            

        

            

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#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]

            

        

            

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pub struct ReadMessagesResponseEntry {

            

        

            

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    channel: ChannelName,

            

        

            

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    message: String,

            

        

            

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}

            

        

            

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impl ReadMessagesResponseEntry {

            

        

            

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    pub fn new(channel: ChannelName, message: String) -> Self {

            

        

            

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        ReadMessagesResponseEntry { channel, message }

            

        

            

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    }

            

        

            

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}

            

        

            

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impl CommandResponse for ReadMessagesResponse {

            

        

            

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    type Request = ReadMessagesRequest;

            

        

            

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    fn parse(parts: ResponseAttributes<'_>) -> Result<Self, ResponseParserError> {

            

        

            

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        let parts: Vec<_> = parts.into_vec()?;

            

        

            

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        debug_assert!(parts.len() % 2 == 0);

            

        

            

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        let mut messages = Vec::with_capacity(parts.len() / 2);

            

        

            

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        for channel_message_pair in parts.chunks_exact(2) {

            

        

            

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            let (ckey, cvalue) = channel_message_pair[0];

            

        

            

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            let (mkey, mvalue) = channel_message_pair[1];

            

        

            

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            debug_assert!(ckey == "channel");

            

        

            

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            debug_assert!(mkey == "message");

            

        

            

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            let channel = expect_property_type!(Some(cvalue), "channel", Text);

            

        

            

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            let channel = channel

            

        

            

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                .parse()

            

        

            

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                .map_err(|_| ResponseParserError::SyntaxError(0, channel.to_string()))?;

            

        

            

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            let message = expect_property_type!(Some(mvalue), "message", Text).to_string();

            

        

            

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            messages.push(ReadMessagesResponseEntry { channel, message });

            

        

            

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        }

            

        

            

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        Ok(ReadMessagesResponse(messages))

            

        

            

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    }

            

        

            

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    fn serialize(&self) -> Vec<u8> {

            

        

            

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        unimplemented!("response serialization is not yet implemented for ReadMessagesResponse")

            

        

            

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    }

            

        

            

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}

            

        

            

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#[cfg(test)]

            

        

            

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mod tests {

            

        

            

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    use indoc::indoc;

            

        

            

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    use super::*;

            

        

            

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    #[test]

            

        

            

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    fn test_parse_response() {

            

        

            

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        let input = indoc! {"

            

        

            

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            channel: channel1

            

        

            

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            message: message1

            

        

            

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            channel: channel2

            

        

            

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            message: message2

            

        

            

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            OK

            

        

            

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        "};

            

        

            

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        let result = ReadMessagesResponse::parse_raw(input.as_bytes());

            

        

            

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        assert_eq!(

            

        

            

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            result,

            

        

            

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            Ok(ReadMessagesResponse(vec![

            

        

            

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                ReadMessagesResponseEntry {

            

        

            

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                    channel: "channel1".parse().unwrap(),

            

        

            

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                    message: "message1".to_string(),

            

        

            

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                },

            

        

            

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                ReadMessagesResponseEntry {

            

        

            

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                    channel: "channel2".parse().unwrap(),

            

        

            

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                    message: "message2".to_string(),

            

        

            

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                },

            

        

            

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            ]))

            

        

            

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        );

            

        

            

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    }

            

        

            

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}