xbp 10.36.0

//! service command module
//!
//! handles service related commands list build install start dev
//! manages service configuration loading and command execution
//! supports root directory and force run from root logic
//! wraps start commands with pm2 when configured

use std::env;
use std::io::{IsTerminal, Write};
use std::path::{Path, PathBuf};
use std::process::Stdio;
use std::time::Instant;

use chrono::Local;
use colored::Colorize;
use dialoguer::{theme::ColorfulTheme, FuzzySelect, Select};
use serde::{Deserialize, Serialize};
use tokio::process::Command;
use tracing::info;

use crate::cli::ui;
use crate::commands::pm2::pm2_start;
use crate::commands::terminal_table::{render_table, TableStyle};
use crate::config::global_xbp_paths;
use crate::logging::{get_prefix, log_debug, log_info, log_success};
use crate::strategies::{
    get_all_services, get_service_by_name, resolve_config_paths_for_runtime, ServiceConfig,
    XbpConfig,
};
use crate::utils::{
    expand_home_in_string, find_xbp_config_upwards, maybe_auto_convert_legacy_xbp_json_to_yaml,
    parse_config_with_auto_heal, resolve_env_placeholders,
};

/// List all services from the current XBP project config
pub async fn list_services(_debug: bool) -> Result<(), String> {
    let (project_root, config): (PathBuf, XbpConfig) = load_xbp_config_with_root().await?;
    let services: Vec<ServiceConfig> = get_all_services(&config);

    if services.is_empty() {
        let _ = log_info("services", "No services configured.", None).await;
        println!("No services configured.");
        return Ok(());
    }

    println!();
    println!(
        "{}",
        format!("Project: {}", config.project_name)
            .bright_cyan()
            .bold()
    );
    println!("{}", "Configured services:".bright_blue().bold());
    let rows: Vec<Vec<String>> = services
        .iter()
        .map(|service| {
            let url = service.url.as_deref().unwrap_or("-").to_string();
            let avail = available_commands_for_service(service).join(" ");
            let commands = if avail.trim().is_empty() {
                "-".to_string()
            } else {
                avail
            };

            vec![
                service.name.clone().bright_white().bold().to_string(),
                service.target.clone().bright_yellow().to_string(),
                service.port.to_string(),
                if commands == "-" {
                    commands.dimmed().to_string()
                } else {
                    commands.bright_green().to_string()
                },
                url,
            ]
        })
        .collect();

    print!(
        "{}",
        render_table(
            &["Name", "Target", "Port", "Available Commands", "URL"],
            &rows,
            TableStyle::Pipe,
            "",
        )
    );

    println!("Total: {} service(s)", services.len());
    println!();
    ui::tip("Run `xbp service` (no args) for interactive picker, or `xbp service <cmd> <name>`.");

    // Also sync to registry (best effort)
    let _ = update_services_registry(&services, &project_root, Some(&config.project_name)).await;

    Ok(())
}

/// Get service by name from config
pub async fn get_service_config(name: &str) -> Result<ServiceConfig, String> {
    let config = load_xbp_config().await?;
    get_service_by_name(&config, name)
}

/// Run a service command (build, install, start, dev)
pub async fn run_service_command(
    command: &str,
    service_name: &str,
    debug: bool,
) -> Result<(), String> {
    let start_time = Instant::now();
    let (project_root, config): (PathBuf, XbpConfig) = load_xbp_config_with_root().await?;
    let service: ServiceConfig = get_service_by_name(&config, service_name)?;

    // Determine working directory
    let working_dir = if service.force_run_from_root.unwrap_or(false) {
        // If force_run_from_root is true, use project root
        project_root.clone()
    } else if let Some(root_dir) = &service.root_directory {
        // Use root_directory if specified
        let expanded = expand_home_in_string(root_dir);
        let candidate = PathBuf::from(expanded);
        if candidate.is_absolute() {
            candidate
        } else {
            project_root.clone().join(root_dir)
        }
    } else {
        // Default to project root
        project_root.clone()
    };

    let project_name = config.project_name.clone();
    let working_dir_str = working_dir.display().to_string();

    let _ = log_info(
        "service",
        &format!("Running '{}' for service '{}'", command, service_name),
        Some(&format!("Working directory: {}", working_dir.display())),
    )
    .await;

    // Execute and capture result so we can always record the run (success + failures)
    let exec_result: Result<(), String> = (async {
        // Get the command to run
        let cmd_str: Option<&String> = match command {
            "pre" => service.commands.as_ref().and_then(|c| c.pre.as_ref()),
            "install" => service.commands.as_ref().and_then(|c| c.install.as_ref()),
            "build" => service.commands.as_ref().and_then(|c| c.build.as_ref()),
            "start" => service.commands.as_ref().and_then(|c| c.start.as_ref()),
            "dev" => service.commands.as_ref().and_then(|c| c.dev.as_ref()),
            _ => {
                return Err(format!(
                    "Unknown command: {}. Valid commands: pre, install, build, start, dev",
                    command
                ))
            }
        };

        let cmd_str = cmd_str.ok_or_else(|| {
            format!(
                "Command '{}' not configured for service '{}'",
                command, service_name
            )
        })?;

        // Handle empty build command
        if command == "build" && cmd_str.is_empty() {
            let _ = log_info("service", "Build command is empty, skipping", None).await;
            return Ok(());
        }

        // For start command, wrap with PM2 if start_wrapper is pm2
        if command == "start" && service.start_wrapper.as_deref() == Some("pm2") {
            // Create log directory
            let log_dir = project_root.join(".xbp").join("logs").join(&service.name);
            std::fs::create_dir_all(&log_dir)
                .map_err(|e| format!("Failed to create log directory: {}", e))?;

            // Build PM2 start command with port argument
            let pm2_command: String = format!("{} --port {}", cmd_str, service.port);

            let _ = log_info(
                "service",
                &format!("Starting service '{}' with PM2", service_name),
                Some(&pm2_command),
            )
            .await;

            let envs = merge_envs(
                &project_root,
                config.environment.as_ref(),
                service.environment.as_ref(),
            );
            pm2_start(
                &service.name,
                &pm2_command,
                Some(&log_dir),
                envs.as_ref(),
                debug,
            )
            .await?;

            let _ = log_success(
                "service",
                &format!("Service '{}' started successfully", service_name),
                None,
            )
            .await;

            return Ok(());
        }

        let envs = merge_envs(
            &project_root,
            config.environment.as_ref(),
            service.environment.as_ref(),
        );

        // Run pre-command if it exists and we're not running pre itself
        if command != "pre" {
            if let Some(pre_cmd) = service.commands.as_ref().and_then(|c| c.pre.as_ref()) {
                if !pre_cmd.is_empty() {
                    let _ = log_info("service", "Running pre-command", Some(pre_cmd)).await;
                    run_command_in_dir(&working_dir, pre_cmd, envs.as_ref(), debug).await?;
                }
            }
        }

        // Execute the command
        run_command_in_dir(&working_dir, cmd_str, envs.as_ref(), debug).await?;

        let _ = log_success(
            "service",
            &format!(
                "Command '{}' completed for service '{}'",
                command, service_name
            ),
            None,
        )
        .await;

        Ok(())
    })
    .await;

    let duration_ms = start_time.elapsed().as_millis() as u64;
    let success = exec_result.is_ok();
    let exit_code = if success { Some(0) } else { None };

    // Always record the run attempt (success or failure)
    let _ = record_service_run(ServiceRunRecord {
        timestamp: Local::now().to_rfc3339(),
        project_root: project_root.to_string_lossy().to_string(),
        project_name: Some(project_name),
        service: service_name.to_string(),
        command: command.to_string(),
        working_dir: working_dir_str,
        success,
        duration_ms,
        exit_code,
    });

    exec_result
}

/// Run a shell command in a specific directory
async fn run_command_in_dir(
    dir: &PathBuf,
    command: &str,
    envs: Option<&std::collections::HashMap<String, String>>,
    _debug: bool,
) -> Result<(), String> {
    let _ = log_debug(
        "service",
        &format!("Executing: {} in {}", command, dir.display()),
        None,
    )
    .await;

    // Use shell to execute the command (supports complex commands with pipes, etc.)
    #[cfg(unix)]
    let mut cmd = Command::new("sh");
    #[cfg(unix)]
    cmd.arg("-c");

    #[cfg(windows)]
    let mut cmd = Command::new("cmd");
    #[cfg(windows)]
    cmd.arg("/C");

    cmd.arg(command);
    cmd.current_dir(dir);
    if let Some(envs) = envs {
        cmd.envs(envs);
    }
    cmd.stdout(Stdio::inherit());
    cmd.stderr(Stdio::inherit());

    let status = cmd
        .status()
        .await
        .map_err(|e| format!("Failed to execute command: {}", e))?;

    if !status.success() {
        return Err(format!(
            "Command failed with exit code: {}",
            status.code().unwrap_or(-1)
        ));
    }

    Ok(())
}

fn merge_envs(
    project_root: &std::path::Path,
    global: Option<&std::collections::HashMap<String, String>>,
    service: Option<&std::collections::HashMap<String, String>>,
) -> Option<std::collections::HashMap<String, String>> {
    if global.is_none() && service.is_none() {
        return None;
    }
    let mut out = std::collections::HashMap::new();
    if let Some(g) = global {
        out.extend(g.clone());
    }
    if let Some(s) = service {
        out.extend(s.clone());
    }
    Some(resolve_env_placeholders(project_root, &out))
}

pub async fn load_xbp_config_with_root() -> Result<(PathBuf, XbpConfig), String> {
    let current_dir: PathBuf =
        env::current_dir().map_err(|e| format!("Failed to get current directory: {}", e))?;

    let found = find_xbp_config_upwards(&current_dir).ok_or_else(|| {
        format!(
            "{}\n\n{}\n{}",
            "Currently not in an XBP project",
            "No xbp.yaml/xbp.yml/xbp.json found in current directory or .xbp/",
            "Run 'xbp' to select a project or 'xbp setup' to initialize a new project."
        )
    })?;

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

    let (mut config, healed_content): (XbpConfig, Option<String>) =
        parse_config_with_auto_heal(&content, found.kind).map_err(|e| {
            if found.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 _ = std::fs::write(&found.config_path, healed_content);
    }

    resolve_config_paths_for_runtime(&mut config, &found.project_root);

    if found.kind == "json" {
        let _ = maybe_auto_convert_legacy_xbp_json_to_yaml(&found.project_root, &found.config_path);
    }

    crate::data::athena::persist_project_snapshot(&found.project_root, &config, Some(found.kind))
        .await;

    Ok((found.project_root, config))
}

/// Load XBP config from current directory (or parent directories)
pub async fn load_xbp_config() -> Result<XbpConfig, String> {
    Ok(load_xbp_config_with_root().await?.1)
}

/// Check if we're in an xbp project
pub async fn is_xbp_project() -> bool {
    let current_dir = match env::current_dir() {
        Ok(dir) => dir,
        Err(_) => return false,
    };
    find_xbp_config_upwards(&current_dir).is_some()
}

/// Show help for a specific service
pub async fn show_service_help(service_name: &str) -> Result<(), String> {
    let service = get_service_config(service_name).await?;
    let prefix = get_prefix();

    info!("{}", prefix);
    info!("{} Service: {}", prefix, service.name);
    info!("{} {:-<60}", prefix, "");
    info!("{} Target: {}", prefix, service.target);
    info!("{} Port: {}", prefix, service.port);
    info!("{} Branch: {}", prefix, service.branch);
    if let Some(url) = &service.url {
        info!(" {}URL: {}", prefix, url);
    }
    if let Some(root_dir) = &service.root_directory {
        info!(" {}Root Directory: {}", prefix, root_dir);
    }
    info!(
        "{} Force Run From Root: {}",
        prefix,
        service.force_run_from_root.unwrap_or(false)
    );

    if let Some(commands) = &service.commands {
        info!("{}", prefix);
        info!("{} Available Commands:", prefix);
        info!("{} {:-<60}", prefix, "");
        if commands.pre.is_some() {
            info!("{} Service pre {}", prefix, service_name);
        }
        if commands.install.is_some() {
            info!("{} Service install {}", prefix, service_name);
        }
        if commands.build.is_some() {
            info!("{} Service build {}", prefix, service_name);
        }
        if commands.start.is_some() {
            info!("{} Service start {}", prefix, service_name);
        }
        if commands.dev.is_some() {
            info!("{} Service dev {}", prefix, service_name);
        }
    }

    info!("{}", prefix);
    info!("{} Redeploy:", prefix);
    info!("{} Redeploy {}", prefix, service_name);

    Ok(())
}

// -----------------------------------------------------------------------------
// Service preview, interactive picker, run recording & registry (in ~/.xbp/logs/service/)
// -----------------------------------------------------------------------------

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ServiceRunRecord {
    pub timestamp: String,
    pub project_root: String,
    pub project_name: Option<String>,
    pub service: String,
    pub command: String,
    pub working_dir: String,
    pub success: bool,
    pub duration_ms: u64,
    pub exit_code: Option<i32>,
}

#[derive(Debug, Clone, Serialize, Deserialize, Default)]
pub struct ServicesRegistry {
    pub last_updated: String,
    pub services: Vec<RegisteredService>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct RegisteredService {
    pub name: String,
    pub project_path: String,
    pub project_name: Option<String>,
    pub target: String,
    pub port: u16,
    pub available_commands: Vec<String>,
    pub last_seen: String,
}

fn global_service_dir() -> Result<PathBuf, String> {
    let paths = global_xbp_paths()?;
    let dir = paths.logs_dir.join("service");
    std::fs::create_dir_all(&dir)
        .map_err(|e| format!("Failed to create service logs dir: {}", e))?;
    Ok(dir)
}

pub fn service_runs_path() -> Result<PathBuf, String> {
    Ok(global_service_dir()?.join("runs.jsonl"))
}

pub fn service_registry_path() -> Result<PathBuf, String> {
    Ok(global_service_dir()?.join("registry.json"))
}

/// Append a run record (jsonl) for history of `xbp service` executions.
pub fn record_service_run(record: ServiceRunRecord) -> Result<(), String> {
    let path = service_runs_path()?;
    let mut file = std::fs::OpenOptions::new()
        .create(true)
        .append(true)
        .open(&path)
        .map_err(|e| format!("Failed to open runs log {}: {}", path.display(), e))?;
    let line = serde_json::to_string(&record).map_err(|e| e.to_string())?;
    writeln!(file, "{}", line).map_err(|e| e.to_string())?;
    Ok(())
}

/// Load the services registry (global across projects).
pub fn load_services_registry() -> Result<ServicesRegistry, String> {
    let path = service_registry_path()?;
    if !path.exists() {
        return Ok(ServicesRegistry::default());
    }
    let content =
        std::fs::read_to_string(&path).map_err(|e| format!("Failed to read registry: {}", e))?;
    let reg: ServicesRegistry =
        serde_json::from_str(&content).map_err(|e| format!("Failed to parse registry: {}", e))?;
    Ok(reg)
}

/// Update (merge) the registry with current project's services.
pub async fn update_services_registry(
    services: &[ServiceConfig],
    project_root: &Path,
    project_name: Option<&str>,
) -> Result<(), String> {
    let mut reg = load_services_registry().unwrap_or_default();
    let now = Local::now().to_rfc3339();
    let root_str = project_root.to_string_lossy().to_string();

    for svc in services {
        let avail = available_commands_for_service(svc);
        let reg_svc = RegisteredService {
            name: svc.name.clone(),
            project_path: root_str.clone(),
            project_name: project_name.map(|s| s.to_string()),
            target: svc.target.clone(),
            port: svc.port,
            available_commands: avail,
            last_seen: now.clone(),
        };

        // replace if same (project_path + name)
        if let Some(existing) = reg
            .services
            .iter_mut()
            .find(|r| r.project_path == root_str && r.name == svc.name)
        {
            *existing = reg_svc;
        } else {
            reg.services.push(reg_svc);
        }
    }

    reg.last_updated = now;

    let path = service_registry_path()?;
    let json = serde_json::to_string_pretty(&reg).map_err(|e| e.to_string())?;
    std::fs::write(&path, json).map_err(|e| format!("Failed to write registry: {}", e))?;

    Ok(())
}

/// Return list of configured commands that have a non-empty value for a service.
pub fn available_commands_for_service(s: &ServiceConfig) -> Vec<String> {
    let mut v = Vec::new();
    if let Some(c) = &s.commands {
        if c.pre.as_ref().is_some_and(|x| !x.trim().is_empty()) {
            v.push("pre".to_string());
        }
        if c.install.as_ref().is_some_and(|x| !x.trim().is_empty()) {
            v.push("install".to_string());
        }
        if c.build.as_ref().is_some_and(|x| !x.trim().is_empty()) {
            v.push("build".to_string());
        }
        if c.start.as_ref().is_some_and(|x| !x.trim().is_empty()) {
            v.push("start".to_string());
        }
        if c.dev.as_ref().is_some_and(|x| !x.trim().is_empty()) {
            v.push("dev".to_string());
        }
    }
    v
}

/// Pretty print preview of available services + commands (used by list and interactive entry).
pub async fn print_service_preview() -> Result<(), String> {
    let (project_root, config): (PathBuf, XbpConfig) = load_xbp_config_with_root().await?;
    let services = get_all_services(&config);

    println!();
    println!(
        "{} {}",
        "◆".bright_blue().bold(),
        format!("xbp service — {}", config.project_name)
            .bright_cyan()
            .bold()
    );
    ui::divider(72);

    if services.is_empty() {
        println!("No services configured in this project.");
        return Ok(());
    }

    for svc in &services {
        let avail = available_commands_for_service(svc);
        let cmds_disp = if avail.is_empty() {
            "no commands".dimmed().to_string()
        } else {
            avail.join(", ").bright_green().to_string()
        };

        let root_note = svc
            .root_directory
            .as_deref()
            .map(|r| format!(" root={}", r))
            .unwrap_or_default();

        println!(
            "  {} {}  {}  port {}  {} {}",
            "•".bright_magenta(),
            svc.name.bright_white().bold(),
            format!("[{}]", svc.target).bright_yellow(),
            svc.port.to_string().bright_cyan(),
            cmds_disp,
            root_note.dimmed()
        );
    }

    ui::divider(72);
    println!(
        "{} {}",
        "Hint:".bright_yellow().bold(),
        "Pick interactively below, or use `xbp service <command> <name>`".dimmed()
    );

    // sync registry
    let _ = update_services_registry(&services, &project_root, Some(&config.project_name)).await;

    Ok(())
}

fn is_interactive_terminal() -> bool {
    std::io::stdin().is_terminal()
        && std::io::stdout().is_terminal()
        && std::env::var_os("XBP_NON_INTERACTIVE").is_none()
}

/// Interactive picker: when you run `xbp service` bare, preview then let user choose service then command.
pub async fn run_service_interactive(debug: bool) -> Result<(), String> {
    // Always attempt to show preview (also updates registry)
    if let Err(_e) = print_service_preview().await {
        // If not in project, show a friendly message + recent registry info
        println!();
        println!("{}", "Not inside an XBP project directory.".bright_yellow());
        println!(
            "{} {}",
            "Tip:".bright_cyan(),
            "cd into a project with xbp.yaml (or .xbp/xbp.yaml) and try again.".dimmed()
        );

        // Show recent known services from registry as a teaser
        if let Ok(reg) = load_services_registry() {
            if !reg.services.is_empty() {
                println!();
                println!("{}", "Recently known services (from registry):".dimmed());
                for rs in reg.services.iter().take(8) {
                    let proj = rs.project_name.as_deref().unwrap_or("?");
                    println!(
                        "  {} {}  ({})  cmds: {}",
                        "•".dimmed(),
                        rs.name.bright_white(),
                        proj,
                        rs.available_commands.join(", ").dimmed()
                    );
                }
                println!();
                println!(
                    "{}",
                    format!(
                        "Registry: {}",
                        service_registry_path().unwrap_or_default().display()
                    )
                    .dimmed()
                );
            }
        }
        return Ok(());
    }

    if !is_interactive_terminal() {
        ui::tip("Non-interactive terminal detected. Use `xbp service <cmd> <name>` explicitly.");
        return Ok(());
    }

    let (_project_root, config) = load_xbp_config_with_root().await?;
    let services = get_all_services(&config);
    if services.is_empty() {
        return Ok(());
    }

    // Build labels for service picker
    let service_labels: Vec<String> = services
        .iter()
        .map(|s| {
            let cmds = available_commands_for_service(s);
            let cmd_hint = if cmds.is_empty() {
                "".to_string()
            } else {
                format!(" — {}", cmds.join(", "))
            };
            format!("{} ({}) port {} {}", s.name, s.target, s.port, cmd_hint)
        })
        .collect();

    let service_idx = match FuzzySelect::with_theme(&ColorfulTheme::default())
        .with_prompt("Select service to operate on")
        .items(&service_labels)
        .default(0)
        .interact_opt()
    {
        Ok(Some(i)) => i,
        _ => {
            println!("{}", "Cancelled.".dimmed());
            return Ok(());
        }
    };

    let chosen = &services[service_idx];
    let avail_cmds = available_commands_for_service(chosen);
    if avail_cmds.is_empty() {
        println!(
            "Service '{}' has no runnable commands configured.",
            chosen.name
        );
        return Ok(());
    }

    let cmd_idx = match Select::with_theme(&ColorfulTheme::default())
        .with_prompt(format!("Select command for '{}'", chosen.name))
        .items(&avail_cmds)
        .default(0)
        .interact_opt()
    {
        Ok(Some(i)) => i,
        _ => {
            println!("{}", "Cancelled.".dimmed());
            return Ok(());
        }
    };

    let chosen_cmd = &avail_cmds[cmd_idx];

    println!();
    println!(
        "{} Running {} {} {}",
        "▶".bright_green().bold(),
        "xbp service".bright_magenta(),
        chosen_cmd.bright_cyan().bold(),
        chosen.name.bright_white().bold()
    );
    ui::divider(40);

    run_service_command(chosen_cmd, &chosen.name, debug).await
}

/// If a command (e.g. "start") is given without service name, offer interactive pick among services that support it.
pub async fn pick_service_for_command(command: &str, debug: bool) -> Result<(), String> {
    let (_project_root, config) = load_xbp_config_with_root().await?;
    let all_services = get_all_services(&config);

    let candidates: Vec<&ServiceConfig> = all_services
        .iter()
        .filter(|s| {
            available_commands_for_service(s)
                .iter()
                .any(|c| c == command)
        })
        .collect();

    if candidates.is_empty() {
        return Err(format!(
            "No services have a '{}' command configured. Check `xbp services`.",
            command
        ));
    }

    if candidates.len() == 1 {
        let only = candidates[0];
        println!(
            "Only one service supports '{}': {} — running it.",
            command, only.name
        );
        return run_service_command(command, &only.name, debug).await;
    }

    if !is_interactive_terminal() {
        let names: Vec<_> = candidates.iter().map(|s| s.name.as_str()).collect();
        return Err(format!(
            "Multiple services support '{}'. Specify one of: {}",
            command,
            names.join(", ")
        ));
    }

    let labels: Vec<String> = candidates
        .iter()
        .map(|s| format!("{} (port {})", s.name, s.port))
        .collect();

    let idx = FuzzySelect::with_theme(&ColorfulTheme::default())
        .with_prompt(format!("Select service for '{}'", command))
        .items(&labels)
        .default(0)
        .interact()
        .map_err(|e| format!("Selection failed: {}", e))?;

    let chosen = candidates[idx];
    run_service_command(command, &chosen.name, debug).await
}

#[cfg(test)]
mod tests {
    use crate::commands::terminal_table::{render_table, TableStyle};

    #[test]
    fn service_table_renderer_pads_colored_cells() {
        let rendered = render_table(
            &["Name", "Port"],
            &[vec![
                "\u{1b}[1;37mathena\u{1b}[0m".to_string(),
                "3000".to_string(),
            ]],
            TableStyle::Box,
            "",
        );

        assert!(rendered.contains("athena"));
        assert!(rendered.contains("3000"));
        assert!(rendered.contains("┌"));
        assert!(rendered.contains("│"));
    }
}