xbp 10.28.0

//! deployment configuration management module
//!
//! handles reading and writing deployment configurations
//! including xbp.yaml/xbp.json files and cli argument parsing
//! supports both legacy single service and new multi service formats
//! validates service configurations for duplicates and invalid targets

use serde::{Deserialize, Serialize};
use std::collections::HashMap;
use std::fs;
use std::path::PathBuf;

use crate::config::LinearConfig;
use crate::utils::{
    collapse_project_path, find_xbp_config_upwards, maybe_auto_convert_legacy_xbp_json_to_yaml,
    parse_config_with_auto_heal, resolve_env_placeholders, resolve_project_path,
};

fn default_xbp_version() -> String {
    "0.1.0".to_string()
}

fn default_auto_push_on_commit() -> bool {
    true
}

pub const DEFAULT_GITHUB_RELEASE_BRANCH_NAMING_TEMPLATE: &str = "releases/${GITHUB_VERSION}";

#[derive(Debug, Clone, Serialize, Deserialize, Default)]
pub struct PublishTargetConfig {
    #[serde(default)]
    pub enabled: Option<bool>,
    #[serde(default)]
    pub package_name: Option<String>,
    #[serde(default)]
    pub working_directory: Option<String>,
    #[serde(default)]
    pub manifest_path: Option<String>,
    #[serde(default)]
    pub token: Option<String>,
    #[serde(default)]
    pub preflight_commands: Vec<String>,
    #[serde(default)]
    pub publish_command: Option<String>,
    #[serde(default)]
    pub use_wsl: Option<bool>,
    #[serde(default)]
    pub wsl_distribution: Option<String>,
    #[serde(default)]
    pub generate_npmrc: Option<bool>,
    #[serde(default)]
    pub access: Option<String>,
}

#[derive(Debug, Clone, Serialize, Deserialize, Default)]
pub struct PublishProjectConfig {
    #[serde(default)]
    pub npm: Option<PublishTargetConfig>,
    #[serde(default)]
    pub crates: Option<PublishTargetConfig>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ServiceCommands {
    #[serde(default)]
    pub pre: Option<String>,
    #[serde(default)]
    pub install: Option<String>,
    #[serde(default)]
    pub build: Option<String>,
    #[serde(default)]
    pub start: Option<String>,
    #[serde(default)]
    pub dev: Option<String>,
}

#[derive(Debug, Clone, Serialize, Deserialize, Default)]
pub struct SystemdConfig {
    #[serde(default)]
    pub environment_files: Vec<String>,
    #[serde(default)]
    pub config_paths: Vec<String>,
    #[serde(default)]
    pub read_write_paths: Vec<String>,
    #[serde(default)]
    pub runtime_directories: Vec<String>,
    #[serde(default)]
    pub state_directories: Vec<String>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct DatabaseConfig {
    #[serde(default)]
    pub enabled: Option<bool>,
    #[serde(default)]
    pub backend: Option<String>,
    #[serde(default)]
    pub url_env: Option<String>,
    #[serde(default)]
    pub key_env: Option<String>,
    #[serde(default)]
    pub schema: Option<String>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ServiceConfig {
    pub name: String,
    pub target: String,
    pub branch: String,
    pub port: u16,
    #[serde(default)]
    pub root_directory: Option<String>,
    #[serde(default)]
    pub environment: Option<HashMap<String, String>>,
    #[serde(default)]
    pub url: Option<String>,
    #[serde(default)]
    pub healthcheck_path: Option<String>,
    #[serde(default)]
    pub restart_policy: Option<String>,
    #[serde(default)]
    pub restart_policy_max_failure_count: Option<u32>,
    #[serde(default)]
    pub start_wrapper: Option<String>,
    #[serde(default)]
    pub commands: Option<ServiceCommands>,
    #[serde(default)]
    pub force_run_from_root: Option<bool>,
    #[serde(default)]
    pub systemd_service_name: Option<String>,
    #[serde(default)]
    pub systemd: Option<SystemdConfig>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct XbpConfig {
    pub project_name: String,
    #[serde(default = "default_xbp_version")]
    pub version: String,
    pub port: u16,
    pub build_dir: String,
    #[serde(default)]
    pub app_type: Option<String>,
    #[serde(default)]
    pub build_command: Option<String>,
    #[serde(default)]
    pub start_command: Option<String>,
    #[serde(default)]
    pub install_command: Option<String>,
    #[serde(default)]
    pub environment: Option<HashMap<String, String>>,
    #[serde(default)]
    pub services: Option<Vec<ServiceConfig>>,
    #[serde(default)]
    pub systemd_service_name: Option<String>,
    #[serde(default)]
    pub systemd: Option<SystemdConfig>,
    #[serde(default)]
    pub kafka_brokers: Option<String>,
    #[serde(default)]
    pub kafka_topic: Option<String>,
    #[serde(default)]
    pub kafka_public_url: Option<String>,
    #[serde(default)]
    pub log_files: Option<Vec<String>>,
    #[serde(default)]
    pub monitor_url: Option<String>,
    #[serde(default)]
    pub monitor_method: Option<String>,
    #[serde(default)]
    pub monitor_expected_code: Option<u16>,
    #[serde(default)]
    pub monitor_interval: Option<u64>,
    #[serde(default)]
    pub database: Option<DatabaseConfig>,
    // Legacy fields for backward compatibility
    #[serde(default)]
    pub target: Option<String>,
    #[serde(default)]
    pub branch: Option<String>,
    #[serde(default)]
    pub crate_name: Option<String>,
    #[serde(default)]
    pub npm_script: Option<String>,
    #[serde(default)]
    pub port_storybook: Option<u16>,
    #[serde(default)]
    pub url: Option<String>,
    #[serde(default)]
    pub url_storybook: Option<String>,
    #[serde(default)]
    pub linear: Option<LinearConfig>,
    #[serde(default)]
    pub github: Option<GitHubProjectConfig>,
    #[serde(default)]
    pub publish: Option<PublishProjectConfig>,
}

#[derive(Debug, Clone, Serialize, Deserialize, Default)]
pub struct GitHubProjectConfig {
    #[serde(default = "default_auto_push_on_commit")]
    pub auto_push_on_commit: bool,
    #[serde(default)]
    pub release_branch: Option<GitHubReleaseBranchConfig>,
}

#[derive(Debug, Clone, Serialize, Deserialize, Default)]
pub struct GitHubReleaseBranchConfig {
    #[serde(default)]
    pub enabled: bool,
    #[serde(default, alias = "template")]
    pub naming_template: Option<String>,
}

#[derive(Debug, Clone, PartialEq, Eq)]
pub struct GitHubReleaseBranchSettings {
    pub naming_template: String,
}

#[derive(Debug, Clone)]
pub struct DeploymentConfig {
    pub app_name: String,
    pub port: u16,
    pub app_dir: PathBuf,
    pub build_command: Option<String>,
    pub start_command: Option<String>,
    pub install_command: Option<String>,
    pub environment: HashMap<String, String>,
}

pub fn normalize_config_paths_for_persistence(
    config: &mut XbpConfig,
    project_root: &std::path::Path,
) {
    config.build_dir = collapse_project_path(project_root, &config.build_dir);
    if let Some(publish) = &mut config.publish {
        for target in [&mut publish.npm, &mut publish.crates] {
            if let Some(target) = target {
                if let Some(working_directory) = &target.working_directory {
                    target.working_directory =
                        Some(collapse_project_path(project_root, working_directory));
                }
                if let Some(manifest_path) = &target.manifest_path {
                    target.manifest_path = Some(collapse_project_path(project_root, manifest_path));
                }
            }
        }
    }
    if let Some(services) = &mut config.services {
        for service in services {
            if let Some(root_directory) = &service.root_directory {
                service.root_directory = Some(collapse_project_path(project_root, root_directory));
            }
        }
    }
}

pub fn resolve_config_paths_for_runtime(config: &mut XbpConfig, project_root: &std::path::Path) {
    config.build_dir = resolve_project_path(project_root, &config.build_dir);
    if let Some(publish) = &mut config.publish {
        for target in [&mut publish.npm, &mut publish.crates] {
            if let Some(target) = target {
                if let Some(working_directory) = &target.working_directory {
                    target.working_directory =
                        Some(resolve_project_path(project_root, working_directory));
                }
                if let Some(manifest_path) = &target.manifest_path {
                    target.manifest_path = Some(resolve_project_path(project_root, manifest_path));
                }
            }
        }
    }
    if let Some(services) = &mut config.services {
        for service in services {
            if let Some(root_directory) = &service.root_directory {
                service.root_directory = Some(resolve_project_path(project_root, root_directory));
            }
        }
    }
}

impl XbpConfig {
    pub fn auto_push_on_commit_enabled(&self) -> bool {
        self.github
            .as_ref()
            .map(|config| config.auto_push_on_commit)
            .unwrap_or(true)
    }

    pub fn github_release_branch_settings(&self) -> Option<GitHubReleaseBranchSettings> {
        let release_branch = self
            .github
            .as_ref()
            .and_then(|config| config.release_branch.as_ref())?;
        if !release_branch.enabled {
            return None;
        }

        let naming_template = release_branch
            .naming_template
            .as_deref()
            .map(str::trim)
            .filter(|value| !value.is_empty())
            .unwrap_or(DEFAULT_GITHUB_RELEASE_BRANCH_NAMING_TEMPLATE)
            .to_string();

        Some(GitHubReleaseBranchSettings { naming_template })
    }
}

impl DeploymentConfig {
    /// Create deployment config from CLI arguments and xbp config fallback
    pub async fn from_args_or_config(
        app_name: Option<String>,
        port: Option<u16>,
        app_dir: Option<PathBuf>,
        config_path: Option<PathBuf>,
    ) -> Result<Self, String> {
        // Try to load from xbp config if not all args provided
        let xbp_config = if app_name.is_none() || port.is_none() || app_dir.is_none() {
            Self::load_xbp_config(config_path).await.ok()
        } else {
            None
        };

        let app_name = app_name
            .or_else(|| xbp_config.as_ref().map(|c| c.project_name.clone()))
            .ok_or("Missing app name")?;

        let port = port
            .or_else(|| xbp_config.as_ref().map(|c| c.port))
            .ok_or("Missing port")?;

        let app_dir = app_dir
            .or_else(|| xbp_config.as_ref().map(|c| PathBuf::from(&c.build_dir)))
            .unwrap_or_else(|| std::env::current_dir().unwrap_or_default());

        let app_dir = app_dir
            .canonicalize()
            .map_err(|e| format!("Failed to resolve app directory: {}", e))?;

        // Get build/start commands from config if available
        let build_command = xbp_config.as_ref().and_then(|c| c.build_command.clone());
        let start_command = xbp_config.as_ref().and_then(|c| c.start_command.clone());
        let install_command = xbp_config.as_ref().and_then(|c| c.install_command.clone());
        let environment = xbp_config
            .as_ref()
            .and_then(|c| c.environment.clone())
            .unwrap_or_default();
        let environment = resolve_env_placeholders(&app_dir, &environment);

        Ok(DeploymentConfig {
            app_name,
            port,
            app_dir,
            build_command,
            start_command,
            install_command,
            environment,
        })
    }

    /// Load xbp configuration from file
    pub async fn load_xbp_config(config_path: Option<PathBuf>) -> Result<XbpConfig, String> {
        let cwd = std::env::current_dir().unwrap_or_default();

        let (project_root, resolved_path, resolved_kind) = if let Some(p) = config_path.clone() {
            let root = p
                .parent()
                .map(|pp| pp.to_path_buf())
                .unwrap_or_else(|| cwd.clone());
            (root, p, "auto")
        } else {
            let found = find_xbp_config_upwards(&cwd)
                .ok_or_else(|| "Configuration file not found".to_string())?;
            (found.project_root, found.config_path, found.kind)
        };

        let _ = maybe_auto_convert_legacy_xbp_json_to_yaml(&project_root, &resolved_path);

        let (config_path, kind) = (resolved_path, resolved_kind);

        let content = fs::read_to_string(&config_path)
            .map_err(|e| format!("Failed to read config: {}", e))?;

        let effective_kind = match kind {
            "yaml" | "json" => kind,
            _ => {
                if config_path
                    .extension()
                    .and_then(|s| s.to_str())
                    .map(|ext| ext.eq_ignore_ascii_case("yaml") || ext.eq_ignore_ascii_case("yml"))
                    .unwrap_or(false)
                {
                    "yaml"
                } else {
                    "json"
                }
            }
        };

        let (mut config, healed_content): (XbpConfig, Option<String>) =
            parse_config_with_auto_heal(&content, effective_kind).map_err(|e| {
                if effective_kind == "yaml" {
                    format!("Failed to parse YAML config: {}", e)
                } else {
                    format!("Failed to parse JSON config: {}", e)
                }
            })?;

        if let Some(healed_content) = healed_content {
            let _ = fs::write(&config_path, healed_content);
        }

        resolve_config_paths_for_runtime(&mut config, &project_root);

        // Validate services if present
        if let Some(services) = &config.services {
            validate_services(services)?;
        }

        Ok(config)
    }

    /// Save updated configuration back to project config files
    pub async fn save_xbp_config(&self, config_path: Option<PathBuf>) -> Result<(), String> {
        let dir = self.app_dir.join(".xbp");
        let json_path = dir.join("xbp.json");
        let yaml_path = dir.join("xbp.yaml");

        // Create .xbp directory if it doesn't exist
        fs::create_dir_all(&dir)
            .map_err(|e| format!("Failed to create config directory: {}", e))?;

        let mut xbp_config = XbpConfig {
            project_name: self.app_name.clone(),
            version: default_xbp_version(),
            port: self.port,
            build_dir: self.app_dir.to_string_lossy().to_string(),
            app_type: None,
            build_command: self.build_command.clone(),
            start_command: self.start_command.clone(),
            install_command: self.install_command.clone(),
            environment: if self.environment.is_empty() {
                None
            } else {
                Some(self.environment.clone())
            },
            services: None,
            systemd_service_name: None,
            systemd: None,
            kafka_brokers: None,
            kafka_topic: None,
            kafka_public_url: None,
            log_files: None,
            monitor_url: None,
            monitor_method: None,
            monitor_expected_code: None,
            monitor_interval: None,
            database: None,
            target: None,
            branch: None,
            crate_name: None,
            npm_script: None,
            port_storybook: None,
            url: None,
            url_storybook: None,
            linear: None,
            github: None,
            publish: None,
        };

        normalize_config_paths_for_persistence(&mut xbp_config, &self.app_dir);

        let yaml = serde_yaml::to_string(&xbp_config)
            .map_err(|e| format!("Failed to serialize config (yaml): {}", e))?;
        let json = serde_json::to_string_pretty(&xbp_config)
            .map_err(|e| format!("Failed to serialize config (json): {}", e))?;

        let explicit_path = config_path;
        let explicit_is_json = explicit_path
            .as_ref()
            .and_then(|path| path.extension().and_then(|ext| ext.to_str()))
            .map(|ext| ext.eq_ignore_ascii_case("json"))
            .unwrap_or(false);

        fs::write(&yaml_path, &yaml)
            .map_err(|e| format!("Failed to write yaml config {}: {}", yaml_path.display(), e))?;

        if explicit_is_json {
            let out_path = explicit_path.expect("explicit path should exist");
            fs::write(&out_path, &json).map_err(|e| {
                format!(
                    "Failed to write legacy JSON config {}: {}",
                    out_path.display(),
                    e
                )
            })?;
        } else if json_path.exists() {
            fs::write(&json_path, &json).map_err(|e| {
                format!(
                    "Failed to sync legacy JSON config {}: {}",
                    json_path.display(),
                    e
                )
            })?;
        }

        Ok(())
    }

    /// Update port in the configuration
    pub fn update_port(&mut self, new_port: u16) {
        self.port = new_port;
    }

    /// Merge with deployment recommendations from project detection
    pub fn merge_with_recommendations(
        &mut self,
        recommendations: &super::project_detector::DeploymentRecommendations,
    ) {
        // Use recommendations if not already set
        if self.build_command.is_none() {
            self.build_command = recommendations.build_command.clone();
        }

        if self.start_command.is_none() {
            self.start_command = recommendations.start_command.clone();
        }

        if self.install_command.is_none() {
            self.install_command = recommendations.install_command.clone();
        }

        // Use recommended process name if app_name is generic
        if let Some(recommended_name) = &recommendations.process_name {
            if self.app_name == "app" || self.app_name == "unknown" {
                self.app_name = recommended_name.clone();
            }
        }
    }
}

/// Validate services configuration
pub fn validate_services(services: &[ServiceConfig]) -> Result<(), String> {
    let mut names = std::collections::HashSet::new();
    let mut ports = std::collections::HashSet::new();
    let mut urls = std::collections::HashSet::new();

    for service in services {
        // Check for duplicate names
        if !names.insert(&service.name) {
            return Err(format!("Duplicate service name found: {}", service.name));
        }

        // Check for duplicate ports
        if !ports.insert(service.port) {
            return Err(format!("Duplicate port found: {}", service.port));
        }

        // Check for duplicate URLs
        if let Some(url) = &service.url {
            if !urls.insert(url) {
                return Err(format!("Duplicate URL found: {}", url));
            }
        }

        // Validate target
        let valid_targets = ["python", "expressjs", "nextjs", "rust"];
        if !valid_targets.contains(&service.target.as_str()) {
            return Err(format!(
                "Invalid target '{}' for service '{}'. Must be one of: python, expressjs, nextjs, rust",
                service.target, service.name
            ));
        }
    }

    Ok(())
}

/// Find a service by name
pub fn get_service_by_name(config: &XbpConfig, name: &str) -> Result<ServiceConfig, String> {
    if let Some(services) = &config.services {
        services
            .iter()
            .find(|s| s.name == name)
            .cloned()
            .ok_or_else(|| format!("Service '{}' not found in configuration", name))
    } else {
        Err("No services configured. This project uses legacy single-service format.".to_string())
    }
}

/// Get all services from config (or create a virtual one from legacy config)
pub fn get_all_services(config: &XbpConfig) -> Vec<ServiceConfig> {
    if let Some(services) = &config.services {
        services.clone()
    } else {
        // Backward compatibility: create a virtual service from top-level config
        vec![ServiceConfig {
            name: config.project_name.clone(),
            target: config.target.clone().unwrap_or_else(|| "rust".to_string()),
            branch: config.branch.clone().unwrap_or_else(|| "main".to_string()),
            port: config.port,
            root_directory: Some(config.build_dir.clone()),
            environment: config.environment.clone(),
            url: config.url.clone(),
            healthcheck_path: None,
            restart_policy: Some("on_failure".to_string()),
            restart_policy_max_failure_count: Some(10),
            start_wrapper: Some("pm2".to_string()),
            commands: Some(ServiceCommands {
                pre: None,
                install: config.install_command.clone(),
                build: config.build_command.clone(),
                start: config.start_command.clone(),
                dev: None,
            }),
            force_run_from_root: Some(false),
            systemd_service_name: config.systemd_service_name.clone(),
            systemd: config.systemd.clone(),
        }]
    }
}

#[cfg(test)]
mod tests {
    use super::{XbpConfig, DEFAULT_GITHUB_RELEASE_BRANCH_NAMING_TEMPLATE};

    #[test]
    fn github_auto_push_defaults_to_true_when_missing() {
        let config: XbpConfig = serde_yaml::from_str(
            r#"
project_name: demo
version: 0.1.0
port: 3000
build_dir: ./
"#,
        )
        .expect("parse config");

        assert!(config.auto_push_on_commit_enabled());
    }

    #[test]
    fn github_auto_push_can_be_disabled_per_project() {
        let config: XbpConfig = serde_yaml::from_str(
            r#"
project_name: demo
version: 0.1.0
port: 3000
build_dir: ./
github:
  auto_push_on_commit: false
"#,
        )
        .expect("parse config");

        assert!(!config.auto_push_on_commit_enabled());
    }

    #[test]
    fn github_release_branch_is_disabled_by_default() {
        let config: XbpConfig = serde_yaml::from_str(
            r#"
project_name: demo
version: 0.1.0
port: 3000
build_dir: ./
"#,
        )
        .expect("parse config");

        assert!(config.github_release_branch_settings().is_none());
    }

    #[test]
    fn github_release_branch_uses_default_template_when_enabled_without_one() {
        let config: XbpConfig = serde_yaml::from_str(
            r#"
project_name: demo
version: 0.1.0
port: 3000
build_dir: ./
github:
  release_branch:
    enabled: true
"#,
        )
        .expect("parse config");

        let settings = config
            .github_release_branch_settings()
            .expect("release branch settings");
        assert_eq!(
            settings.naming_template,
            DEFAULT_GITHUB_RELEASE_BRANCH_NAMING_TEMPLATE
        );
    }

    #[test]
    fn github_release_branch_uses_custom_template_when_configured() {
        let config: XbpConfig = serde_yaml::from_str(
            r#"
project_name: demo
version: 0.1.0
port: 3000
build_dir: ./
github:
  release_branch:
    enabled: true
    naming_template: rel/${GITHUB_TAG}
"#,
        )
        .expect("parse config");

        let settings = config
            .github_release_branch_settings()
            .expect("release branch settings");
        assert_eq!(settings.naming_template, "rel/${GITHUB_TAG}");
    }
}