module.ae

// std.log - Logging Module
// Import with: import std.log

// Log level constants
// LOG_LEVEL_DEBUG = 0, LOG_LEVEL_INFO = 1, LOG_LEVEL_WARN = 2
// LOG_LEVEL_ERROR = 3, LOG_LEVEL_FATAL = 4

exports(
    log_init_raw, log_shutdown, log_write,
    log_set_level, log_set_colors, log_set_timestamps,
    log_get_stats, log_print_stats,
    init
)

// Initialize and shutdown. Raw init returns 1/0 for ok/file-open-failed.
extern log_init_raw(filename: string, min_level: int) -> int
extern log_shutdown()

// Core logging (variadic not fully supported, use with format string)
extern log_write(level: int, msg: string)

// Configuration
extern log_set_level(level: int)
extern log_set_colors(enabled: int)
extern log_set_timestamps(enabled: int)

// Statistics
extern log_get_stats() -> ptr
extern log_print_stats()

// Initialize logging. Returns "" on success, error string if the
// requested log file could not be opened (in which case logging still
// works via stderr as a fallback).
init(filename: string, min_level: int) -> {
    ok = log_init_raw(filename, min_level)
    if ok == 0 {
        return "cannot open log file"
    }
    return ""
}