#include <tools/ccanlint/ccanlint.h>
#include <tools/tools.h>
#include <ccan/talloc/talloc.h>
#include <ccan/str/str.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <limits.h>
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <err.h>
#include <string.h>
#include <ctype.h>
#include "build.h"

static const char *can_build(struct manifest *m)
{
	if (safe_mode)
		return "Safe mode enabled";
	return NULL;
}

static bool expect_obj_file(struct manifest *m)
{
	/* If it has C files, we expect an object file built from them. */
	return !list_empty(&m->c_files);
}

static char *build_subdir_objs(struct manifest *m)
{
	struct ccan_file *i;

	list_for_each(&m->c_files, i, list) {
		char *fullfile = talloc_asprintf(m, "%s/%s", m->dir, i->name);
		char *output;

		i->compiled = maybe_temp_file(m, "", false, fullfile);
		if (!compile_object(m, fullfile, ccan_dir, "", i->compiled,
				    &output)) {
			talloc_free(i->compiled);
			i->compiled = NULL;
			return talloc_asprintf(m,
					       "Dependency %s"
					       " did not build:\n%s",
					       m->basename, output);
		}
	}
	return NULL;
}

static void check_depends_built(struct manifest *m,
				bool keep,
				unsigned int *timeleft, struct score *score)
{
	struct manifest *i;
	struct stat st;

	list_for_each(&m->deps, i, list) {
		char *errstr;
		if (!expect_obj_file(i))
			continue;

		i->compiled = talloc_asprintf(i, "%s.o", i->dir);
		if (stat(i->compiled, &st) == 0)
			continue;

		if (verbose >= 2)
			printf("  Building dependency %s\n", i->dir);
		score->error = build_subdir_objs(i);
		if (score->error)
			return;
		i->compiled = build_module(i, keep, &errstr);
		if (!i->compiled) {
			score->error = talloc_asprintf(score,
						       "Dependency %s"
						       " did not build:\n%s",
						       i->basename, errstr);
			return;
		}			
	}

	if (!score->error) {
		score->pass = true;
		score->score = score->total;
	}
}

struct ccanlint depends_built = {
	.key = "depends-built",
	.name = "Module's CCAN dependencies can be found or built",
	.check = check_depends_built,
	.can_run = can_build,
};

REGISTER_TEST(depends_built, &depends_exist, NULL);