/*
 * page-index.c -- page /
 *
 * Copyright (c) 2020-2021 David Demelier <markand@malikania.fr>
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <errno.h>
#include <string.h>

#include "config.h"
#include "db.h"
#include "log.h"
#include "pageutil.h"
#include "scid.h"
#include "theme.h"
#include "util.h"

#if 0

/*
 * Document we create for templatize.
 *
 * {
 *   "projects: [
 *     {
 *       "name": "project name",
 *       "desc": "project short description",
 *       "url": "project URL or homepage",
 *       "jobs": [
 *         {
 *           "job": job-id,
 *           "tag": "job tag / revision",
 *           "status": "failed / success"        // failed if at least one has failed
 *         }
 *       ]
 *       "n-failed": number of failed jobs
 *       "n-succes": number of successful jobs
 *     }
 *   ]
 * }
 */

#endif

static void
fill_jobresults(json_t *project, json_t *job, json_t *jobresults)
{
	json_t *iter, *status;
	int exitcode, sigcode;
	size_t i, ns = 0, nf = 0;

	json_array_foreach(jobresults, i, iter) {
		json_unpack(iter, "{si si}", "exitcode", &exitcode, "sigcode", &sigcode);

		if (exitcode == 0 && sigcode == 0)
			ns++;
		else
			nf++;
	}

	if (nf)
		status = json_string("failed");
	else
		status = json_string("success");

	json_object_set_new(job, "status", status);
	json_object_set_new(project, "n-failed", json_integer(nf));
	json_object_set_new(project, "n-success", json_integer(ns));
}

static void
fill_jobs(json_t *project, json_t *jobs)
{
	json_t *iter, *jobresults;
	json_int_t job_id;
	size_t i;

	json_array_foreach(jobs, i, iter) {
		/*
		 * For this job, find all jobresult to check how many have
		 * failed or not.
		 *
		 * Also, since we have the project name, we can remove it.
		 */
		json_object_del(iter, "project_name");
		json_unpack(iter, "{sI}", "id", &job_id);

		if (!(jobresults = db_jobresult_list_by_job_group(job_id)))
			continue;

		fill_jobresults(project, iter, jobresults);
		json_decref(jobresults);
	}

	json_object_set_new(project, "jobs", jobs);
}

static void
fill_projects(json_t *projects)
{
	json_t *jobs, *iter;
	const char *name;
	size_t i;

	json_array_foreach(projects, i, iter) {
		/* Script is not necessary at this point. */
		json_object_del(iter, "script");
		json_unpack(iter, "{ss}", "name", &name);

		/* Find jobs for this project. */
		if (!(jobs = db_job_list(name)))
			continue;

		fill_jobs(iter, jobs);
	}
}

static void
get(struct kreq *req)
{
	json_t *projects, *root;
	char *data;

	/* First, fetch all projects. */
	if ((projects = db_project_list())) {
		fill_projects(projects);

		root = json_pack("{so}", "projects", projects);
		printf("===\n%s\n===\n", json_dumps(root, JSON_INDENT(4)));
		data = theme_page_index(scid.theme, root);
		pageutil_render(req, KHTTP_200, KMIME_TEXT_HTML, data);
		json_decref(projects);
	} else
		pageutil_status(req, KHTTP_500);
}

void
page_index(struct kreq *r)
{
	(void)r;

	switch (r->method) {
	case KMETHOD_GET:
		get(r);
		break;
	default:
		pageutil_status(r, KHTTP_400);
		break;
	}
}