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// config.reef — TOML service definition parser
//
// Parses /etc/zyginit.d/*.toml service definitions into ServiceDef structs.
// Uses Reef's built-in TOML parser: import encoding.toml
//
// This module should be implemented first — it has no illumos dependencies
// and can be tested on any platform.

import encoding.toml
import io.fs

// Service types
enum ServiceType {
    Daemon,     // long-running process, restarted on exit
    Oneshot,    // runs once, considered "started" after exit 0
    Transient,  // runs once, not tracked after exit
}

// Restart policy
enum RestartPolicy {
    Always,
    OnFailure,
    Never,
}

// Stop method
enum StopMethod {
    Contract,   // signal all processes in contract (default)
    Exec,       // run a stop command
}

// Service definition — parsed from TOML
struct ServiceDef {
    name: String,
    description: String,
    service_type: ServiceType,

    // exec
    start_cmd: String,
    stop_cmd: Option<String>,

    // stop
    stop_method: StopMethod,
    stop_signal: String,       // "TERM", "HUP", etc.
    stop_timeout: i32,         // seconds

    // dependencies
    requires: Vec<String>,     // hard dependencies — must be running
    after: Vec<String>,        // ordering — start after these, but don't require

    // contract
    contract_param: Vec<String>,
    contract_fatal: Vec<String>,

    // restart
    restart_policy: RestartPolicy,
    restart_delay: i32,        // seconds
    max_retries: i32,          // -1 = unlimited
}

// Parse a single TOML file into a ServiceDef
fn parse_service(path: String) -> Result<ServiceDef, String> {
    // TODO: implement
    // 1. Read file contents
    // 2. Parse TOML
    // 3. Extract fields with defaults
    // 4. Validate required fields
    Err("not yet implemented")
}

// Scan /etc/zyginit.d/enabled.d/ and return list of enabled service paths
fn scan_enabled(config_dir: String) -> Result<Vec<String>, String> {
    // TODO: implement
    // 1. Read symlinks in enabled.d/
    // 2. Resolve each to its .toml file
    // 3. Return list of absolute paths
    Err("not yet implemented")
}

// Load all enabled services
fn load_enabled_services(config_dir: String) -> Result<Vec<ServiceDef>, String> {
    // TODO: implement
    // 1. scan_enabled()
    // 2. parse_service() for each
    // 3. Return Vec of ServiceDefs
    Err("not yet implemented")
}