package deamon

import "core:log"
import "core:sys/posix"
import "core:sys/linux"

NAME_MAX :: posix.NAME_MAX

handle_inotify :: proc() {
    fd, err := linux.inotify_init()
    if err != nil {
        log.fatalf("Could not initalize inotify: %v", err)
    }

    watch, watch_err := linux.inotify_add_watch(fd, "./cmd/", linux.IN_ALL_EVENTS | {.ONLYDIR})
    if watch_err != nil {
        log.fatalf("Could not add watch to directory 'cmd': %v", watch_err)
    }
    log.infof("Initalized with wd %v for %v", watch, fd)

    for {
        buffer: [size_of(linux.Inotify_Event)+NAME_MAX+1]u8
        size, err := linux.read(fd, buffer[:])
        if err == .EINVAL {
            log.debug(err)
            continue
        } else if err != .NONE {
            log.errorf("Could not read inotify fd: %v", err)
            continue
        }

        i := 0
        for size >= size_of(linux.Inotify_Event) {
            event := (cast(^linux.Inotify_Event)&buffer[i])^
            name := event.len > 0 ? cstring(raw_data(buffer[size_of(linux.Inotify_Event)+i:int(event.len)+i])) : ""

            log.infof("%q: %v", name, event)

            size -= int(size_of(linux.Inotify_Event)+event.len)
            i += int(size_of(linux.Inotify_Event)+event.len)
        }
    }
}