#include <sys/types.h>
#include <assert.h>
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#include <kcgi.h>

#include "http.h"
#include "log.h"
#include "page.h"
#include "page-api-jobs.h"
#include "page-api-projects.h"
#include "page-api-workers.h"
#include "req.h"

enum page {
	PAGE_API,
	PAGE_LAST       /* Not used. */
};

static void
dispatch_api(struct kreq *req)
{
	static const struct {
		const char *prefix;
		void (*handler)(struct kreq *);
	} apis[] = {
		{ "v1/jobs",            page_api_v1_jobs        },
		{ "v1/projects",        page_api_v1_projects    },
		{ "v1/workers",         page_api_v1_workers     },
		{ NULL,                 NULL                    }
	};

	for (size_t i = 0; apis[i].prefix; ++i)
		if (strncmp(req->path, apis[i].prefix, strlen(apis[i].prefix)) == 0)
			return apis[i].handler(req);

	page(req, NULL, KHTTP_404, KMIME_TEXT_HTML, "pages/404.html");
}

static const char *pages[] = {
	[PAGE_API]              = "api"
};

static void (*handlers[])(struct kreq *req) = {
	[PAGE_API]              = dispatch_api
};

static void
process(struct kreq *req)
{
	assert(req);

	log_debug("http: accessing page '%s'", req->path);

	if (req->page == PAGE_LAST)
		page(req, NULL, KHTTP_404, KMIME_TEXT_HTML, "pages/404.html");
	else
		handlers[req->page](req);
}

void
http_fcgi_run(void)
{
	struct kreq req;
	struct kfcgi *fcgi;

	if (khttp_fcgi_init(&fcgi, NULL, 0, pages, PAGE_LAST, 0) != KCGI_OK)
		return;

	while (khttp_fcgi_parse(fcgi, &req) == KCGI_OK)
		process(&req);

	khttp_fcgi_free(fcgi);
}

void
http_cgi_run(void)
{
	struct kreq req;

	if (khttp_parse(&req, NULL, 0, pages, PAGE_LAST, 0) == KCGI_OK)
		process(&req);
}