docker-wrapper 0.11.1

//! Docker Compose images command implementation using unified trait pattern.

use crate::command::{CommandExecutor, ComposeCommand, ComposeConfig, DockerCommand};
use crate::error::Result;
use async_trait::async_trait;
use serde::Deserialize;

/// Docker Compose images command builder
#[derive(Debug, Clone)]
pub struct ComposeImagesCommand {
    /// Base command executor
    pub executor: CommandExecutor,
    /// Base compose configuration
    pub config: ComposeConfig,
    /// Output format
    pub format: Option<ImagesFormat>,
    /// Only display image IDs
    pub quiet: bool,
    /// Services to list images for (empty for all)
    pub services: Vec<String>,
}

/// Images output format
#[derive(Debug, Clone, Copy)]
pub enum ImagesFormat {
    /// Table format (default)
    Table,
    /// JSON format
    Json,
}

impl std::fmt::Display for ImagesFormat {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            Self::Table => write!(f, "table"),
            Self::Json => write!(f, "json"),
        }
    }
}

/// Image information from JSON output
#[derive(Debug, Clone, Deserialize)]
pub struct ImageInfo {
    /// Container name
    pub container: String,
    /// Repository
    pub repository: String,
    /// Tag
    pub tag: String,
    /// Image ID
    #[serde(rename = "ID")]
    pub id: String,
    /// Size
    pub size: String,
}

/// Result from compose images command
#[derive(Debug, Clone)]
pub struct ComposeImagesResult {
    /// Raw stdout output
    pub stdout: String,
    /// Raw stderr output
    pub stderr: String,
    /// Success status
    pub success: bool,
    /// Parsed image information (if JSON format)
    pub images: Vec<ImageInfo>,
    /// Services that were queried
    pub services: Vec<String>,
}

impl ComposeImagesCommand {
    /// Create a new compose images command
    #[must_use]
    pub fn new() -> Self {
        Self {
            executor: CommandExecutor::new(),
            config: ComposeConfig::new(),
            format: None,
            quiet: false,
            services: Vec::new(),
        }
    }

    /// Set output format
    #[must_use]
    pub fn format(mut self, format: ImagesFormat) -> Self {
        self.format = Some(format);
        self
    }

    /// Set output format to JSON
    #[must_use]
    pub fn format_json(mut self) -> Self {
        self.format = Some(ImagesFormat::Json);
        self
    }

    /// Set output format to table
    #[must_use]
    pub fn format_table(mut self) -> Self {
        self.format = Some(ImagesFormat::Table);
        self
    }

    /// Only display image IDs
    #[must_use]
    pub fn quiet(mut self) -> Self {
        self.quiet = true;
        self
    }

    /// Add a service to list images for
    #[must_use]
    pub fn service(mut self, service: impl Into<String>) -> Self {
        self.services.push(service.into());
        self
    }

    /// Add multiple services to list images for
    #[must_use]
    pub fn services<I, S>(mut self, services: I) -> Self
    where
        I: IntoIterator<Item = S>,
        S: Into<String>,
    {
        self.services.extend(services.into_iter().map(Into::into));
        self
    }
}

impl Default for ComposeImagesCommand {
    fn default() -> Self {
        Self::new()
    }
}

#[async_trait]
impl DockerCommand for ComposeImagesCommand {
    type Output = ComposeImagesResult;

    fn get_executor(&self) -> &CommandExecutor {
        &self.executor
    }

    fn get_executor_mut(&mut self) -> &mut CommandExecutor {
        &mut self.executor
    }

    fn build_command_args(&self) -> Vec<String> {
        <Self as ComposeCommand>::build_command_args(self)
    }

    async fn execute(&self) -> Result<Self::Output> {
        let args = <Self as ComposeCommand>::build_command_args(self);
        let output = self.execute_command(args).await?;

        let images = if matches!(self.format, Some(ImagesFormat::Json)) {
            serde_json::from_str(&output.stdout).unwrap_or_default()
        } else {
            Vec::new()
        };

        Ok(ComposeImagesResult {
            stdout: output.stdout,
            stderr: output.stderr,
            success: output.success,
            images,
            services: self.services.clone(),
        })
    }
}

impl ComposeCommand for ComposeImagesCommand {
    fn get_config(&self) -> &ComposeConfig {
        &self.config
    }

    fn get_config_mut(&mut self) -> &mut ComposeConfig {
        &mut self.config
    }

    fn subcommand(&self) -> &'static str {
        "images"
    }

    fn build_subcommand_args(&self) -> Vec<String> {
        let mut args = Vec::new();

        if let Some(format) = self.format {
            args.push("--format".to_string());
            args.push(format.to_string());
        }

        if self.quiet {
            args.push("--quiet".to_string());
        }

        args.extend(self.services.clone());
        args
    }
}

impl ComposeImagesResult {
    /// Check if the command was successful
    #[must_use]
    pub fn success(&self) -> bool {
        self.success
    }

    /// Get parsed image information
    #[must_use]
    pub fn images(&self) -> &[ImageInfo] {
        &self.images
    }

    /// Get the services that were queried
    #[must_use]
    pub fn services(&self) -> &[String] {
        &self.services
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_compose_images_basic() {
        let cmd = ComposeImagesCommand::new();
        let args = cmd.build_subcommand_args();
        assert!(args.is_empty());

        let full_args = ComposeCommand::build_command_args(&cmd);
        assert_eq!(full_args[0], "compose");
        assert!(full_args.contains(&"images".to_string()));
    }

    #[test]
    fn test_compose_images_with_format() {
        let cmd = ComposeImagesCommand::new().format_json();
        let args = cmd.build_subcommand_args();
        assert!(args.contains(&"--format".to_string()));
        assert!(args.contains(&"json".to_string()));
    }

    #[test]
    fn test_compose_images_quiet() {
        let cmd = ComposeImagesCommand::new().quiet();
        let args = cmd.build_subcommand_args();
        assert!(args.contains(&"--quiet".to_string()));
    }

    #[test]
    fn test_compose_images_with_services() {
        let cmd = ComposeImagesCommand::new().services(vec!["web", "db"]);
        let args = cmd.build_subcommand_args();
        assert!(args.contains(&"web".to_string()));
        assert!(args.contains(&"db".to_string()));
    }
}