#include <u.h>
#include <libc.h>
#include <thread.h>
#include "pkg.h"
#include "src.h"

#define MAX(a,b) ((a)>=(b)?(a):(b))

Pkg *pkgs[] = {
	&fontsel,
	&git9,
	&hx,
	&libtags,
	&makeu,
	&mpl,
	&orca,
	&pal,
	&picker,
	&unionfs,
	&whiteboardfs,
	&xmpp,
	&zuke,
};

static int maxname;

static void
usage(void)
{
	print("usage: %s [info | fetch] package...\n", argv0);
	threadexitsall("usage");
}

static int
pkgcmp(void *a_, void *b_)
{
	Pkg **a, **b;

	a = a_;
	b = b_;
	maxname = MAX(maxname, MAX(strlen((*a)->name), strlen((*b)->name)));
	return strcmp((*a)->name, (*b)->name);
}

static void
pkginfo(Pkg *p, int v)
{
	int i;

	if(p == nil)
		return;

	if(v){
		print("name          %s\n", p->name);
		if(p->ver != nil)
			print("version       %s\n", p->ver);
		print("description   %s\n", p->meta.descr);
		print("web           %s\n", p->meta.web);
		print("license       %s\n", p->meta.license);
		if(p->inputs.build[0] != nil || p->inputs.runtime[0] != nil){
			print("dependencies ");
			for(i = 0; i < nelem(p->inputs.build) && p->inputs.build[i] != nil; i++)
				print(" %s", p->inputs.build[i]->name);
			for(i = 0; i < nelem(p->inputs.build) && p->inputs.runtime[i] != nil; i++)
				print(" %s", p->inputs.runtime[i]->name);
			print("\n");
		}
	}else{
		print("%-*s\t%s\n", maxname, p->name, p->meta.descr);
	}
}

static void
pkgfetch(Pkg *p)
{
	int d;

	if(p == nil)
		return;
	if((d = fetchsrc(&p->src)) < 0)
		fprint(2, "fetchsrc: %r\n");
	else
		close(d);
}

static Pkg *
pkgfind(char *name)
{
	int i;

	for(i = 0; i < nelem(pkgs); i++)
		if(strcmp(pkgs[i]->name, name) == 0)
			return pkgs[i];

	fprint(2, "Error: package not found: %s\n", name);

	return nil;
}

static void
chtmpdir(void)
{
	char tempdir[20] = "/tmp/pkgXXXXXXXXXXX";
	char *s;

	s = mktemp(tempdir);
	if(s[0] == 0)
		sysfatal("mktemp failed");
	if(create(s, OREAD|ORCLOSE, DMDIR|0700) < 0)
		sysfatal("can't create %s: %r", s);
	if(chdir(tempdir) != 0)
		sysfatal("can't chdir: %r");
}

static int
cleanup(void *, char *)
{
	/* FIXME remove all temp files */
	print("cleaning up\n");
	return 0;
}

void
threadmain(int argc, char **argv)
{
	int i;

	ARGBEGIN{
	}ARGEND

	quotefmtinstall();
	qsort(pkgs, nelem(pkgs), sizeof(*pkgs), pkgcmp);
	threadwaitchan();
	threadnotify(cleanup, 1);
	chtmpdir();

	if(argc < 1){
		for(i = 0; i < nelem(pkgs); i++)
			pkginfo(pkgs[i], 0);
		goto done;
	}else if(argc >= 2 && strcmp(argv[0], "info") == 0){
		for(i = 1; i < argc; i++)
			pkginfo(pkgfind(argv[i]), 1);
	}else if(argc >= 2 && strcmp(argv[0], "fetch") == 0){
		for(i = 1; i < argc; i++)
			pkgfetch(pkgfind(argv[i]));
	}else{
		usage();
	}

done:
	threadexitsall(nil);
}