#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>

int main(int argc, char **argv) {
    const char *appdir = "/root/linuxdeploy-root";
    char apprun[256], ldbin[256], new_path[4096], new_ldpath[4096];
    struct stat st;

    snprintf(apprun, sizeof(apprun), "%s/AppRun", appdir);
    snprintf(ldbin, sizeof(ldbin), "%s/usr/bin/linuxdeploy", appdir);

    /* Strip --appimage-extract-and-run: that's an AppImage runtime flag,
       not a linuxdeploy flag. Passing it to the real binary causes immediate failure. */
    char **new_argv = malloc((argc + 1) * sizeof(char *));
    int new_argc = 0;
    new_argv[new_argc++] = argv[0];
    for (int i = 1; i < argc; i++) {
        if (strcmp(argv[i], "--appimage-extract-and-run") != 0) {
            new_argv[new_argc++] = argv[i];
        }
    }
    new_argv[new_argc] = NULL;

    setenv("APPDIR", appdir, 1);

    char *old_path = getenv("PATH");
    snprintf(new_path, sizeof(new_path), "%s/usr/bin:%s", appdir, old_path ? old_path : "");
    setenv("PATH", new_path, 1);

    char *old_ldpath = getenv("LD_LIBRARY_PATH");
    snprintf(new_ldpath, sizeof(new_ldpath), "%s/usr/lib:%s/usr/lib/x86_64-linux-gnu:%s",
             appdir, appdir, old_ldpath ? old_ldpath : "");
    setenv("LD_LIBRARY_PATH", new_ldpath, 1);

    if (stat(ldbin, &st) == 0) {
        execv(ldbin, new_argv);
    }
    execv(apprun, new_argv);
    return 1;
}