use crate::meta_plugin::{MetaPlugin, MetaPluginType};

#[derive(Debug, Clone, Default)]
pub struct UserMetaPlugin {
    base: crate::meta_plugin::BaseMetaPlugin,
}

impl UserMetaPlugin {
    pub fn new(
        options: Option<std::collections::HashMap<String, serde_yaml::Value>>,
        outputs: Option<std::collections::HashMap<String, serde_yaml::Value>>,
    ) -> UserMetaPlugin {
        let mut base = crate::meta_plugin::BaseMetaPlugin::new();
        
        // Initialize with helper function
        base.initialize_plugin(
            &["user_uid", "user_gid", "user_name", "user_group"],
            options,
            outputs,
        );
        
        UserMetaPlugin {
            base,
        }
    }
    
    
    fn get_current_username() -> Option<String> {
        uzers::get_user_by_uid(uzers::get_current_uid())
            .map(|user| user.name().to_string_lossy().to_string())
    }
    
    fn get_current_groupname() -> Option<String> {
        uzers::get_group_by_gid(uzers::get_current_gid())
            .map(|group| group.name().to_string_lossy().to_string())
    }
}

impl MetaPlugin for UserMetaPlugin {
    fn initialize(&mut self) -> crate::meta_plugin::MetaPluginResponse {
        let mut metadata = Vec::new();
        
        // Get user info
        let uid = uzers::get_current_uid().to_string();
        let gid = uzers::get_current_gid().to_string();
        let username = Self::get_current_username().unwrap_or_else(|| "unknown".to_string());
        let groupname = Self::get_current_groupname().unwrap_or_else(|| "unknown".to_string());
        
        // Process each output
        let values = [
            ("user_uid", uid),
            ("user_gid", gid),
            ("user_name", username),
            ("user_group", groupname),
        ];
        
        for (name, value) in values {
            if let Some(meta_data) = crate::meta_plugin::process_metadata_outputs(
                name, 
                serde_yaml::Value::String(value), 
                self.base.outputs()
            ) {
                metadata.push(meta_data);
            }
        }
        
        crate::meta_plugin::MetaPluginResponse {
            metadata,
            is_finalized: true,
        }
    }

    fn meta_type(&self) -> MetaPluginType {
        MetaPluginType::User
    }
    
    fn outputs(&self) -> &std::collections::HashMap<String, serde_yaml::Value> {
        self.base.outputs()
    }
    
    fn outputs_mut(&mut self) -> &mut std::collections::HashMap<String, serde_yaml::Value> {
        self.base.outputs_mut()
    }
    
    fn default_outputs(&self) -> Vec<String> {
        vec!["user_uid".to_string(), "user_gid".to_string(), "user_name".to_string(), "user_group".to_string()]
    }
    
    
    fn options(&self) -> &std::collections::HashMap<String, serde_yaml::Value> {
        self.base.options()
    }
    
    fn options_mut(&mut self) -> &mut std::collections::HashMap<String, serde_yaml::Value> {
        self.base.options_mut()
    }
}