/*
 * ----------------------------------------------------------------------------
 * "THE BEER-WARE LICENSE" (Revision 42):
 * Jeroen Domburg <jeroen@spritesmods.com> wrote this file. As long as you retain 
 * this notice you can do whatever you want with this stuff. If we meet some day, 
 * and you think this stuff is worth it, you can buy me a beer in return. 
 * ----------------------------------------------------------------------------
 */

/*
This is example code for the esphttpd library. It's a small-ish demo showing off 
the server, including WiFi connection management capabilities, some IO and
some pictures of cats.
*/

#include <esp8266.h>
#include "httpd.h"
#include "io.h"
#include "httpdespfs.h"
#include "cgi.h"
#include "cgiwifi.h"
#include "cgiflash.h"
#include "stdout.h"
#include "auth.h"
#include "espfs.h"
#include "captdns.h"
#include "webpages-espfs.h"
#include "cgiwebsocket.h"

//The example can print out the heap use every 3 seconds. You can use this to catch memory leaks.
//#define SHOW_HEAP_USE

//Function that tells the authentication system what users/passwords live on the system.
//This is disabled in the default build; if you want to try it, enable the authBasic line in
//the builtInUrls below.
int myPassFn(HttpdConnData *connData, int no, char *user, int userLen, char *pass, int passLen) {
	if (no==0) {
		os_strcpy(user, "admin");
		os_strcpy(pass, "s3cr3t");
		return 1;
//Add more users this way. Check against incrementing no for each user added.
//	} else if (no==1) {
//		os_strcpy(user, "user1");
//		os_strcpy(pass, "something");
//		return 1;
	}
	return 0;
}

void myWebsocketRecv(Websock *ws, char *data, int len, int flags) {
	int i;
	os_printf("Websocket: Received data: ");
	for (i=0; i<len; i++) os_printf("%c", data[i]);
	os_printf("\n");
}

void myWebsocketConnect(Websock *ws) {
	ws->recvCb=myWebsocketRecv;
	cgiWebsocketSend(ws, "Hi, Websocket!", 14, WEBSOCK_FLAG_NONE);
}


#ifdef ESPFS_POS
CgiUploadFlashDef uploadParams={
	.type=CGIFLASH_TYPE_ESPFS,
	.fw1Pos=ESPFS_POS,
	.fw2Pos=0,
	.fwSize=ESPFS_SIZE,
};
#define INCLUDE_FLASH_FNS
#endif
#ifdef OTA_FLASH_SIZE_K
CgiUploadFlashDef uploadParams={
	.type=CGIFLASH_TYPE_FW,
	.fw1Pos=0x1000,
	.fw2Pos=((OTA_FLASH_SIZE_K*1024)/2)+0x1000,
	.fwSize=((OTA_FLASH_SIZE_K*1024)/2)-0x1000,
};
#define INCLUDE_FLASH_FNS
#endif

/*
This is the main url->function dispatching data struct.
In short, it's a struct with various URLs plus their handlers. The handlers can
be 'standard' CGI functions you wrote, or 'special' CGIs requiring an argument.
They can also be auth-functions. An asterisk will match any url starting with
everything before the asterisks; "*" matches everything. The list will be
handled top-down, so make sure to put more specific rules above the more
general ones. Authorization things (like authBasic) act as a 'barrier' and
should be placed above the URLs they protect.
*/
HttpdBuiltInUrl builtInUrls[]={
	{"*", cgiRedirectApClientToHostname, "esp8266.nonet"},
	{"/", cgiRedirect, "/index.tpl"},
	{"/flash.bin", cgiReadFlash, NULL},
	{"/led.tpl", cgiEspFsTemplate, tplLed},
	{"/index.tpl", cgiEspFsTemplate, tplCounter},
	{"/led.cgi", cgiLed, NULL},
	{"/flash/download", cgiReadFlash, NULL},
#ifdef INCLUDE_FLASH_FNS
	{"/flash/next", cgiGetFirmwareNext, &uploadParams},
	{"/flash/upload", cgiUploadFirmware, &uploadParams},
#endif
	{"/flash/reboot", cgiRebootFirmware, NULL},

	//Routines to make the /wifi URL and everything beneath it work.

//Enable the line below to protect the WiFi configuration with an username/password combo.
//	{"/wifi/*", authBasic, myPassFn},

	{"/wifi", cgiRedirect, "/wifi/wifi.tpl"},
	{"/wifi/", cgiRedirect, "/wifi/wifi.tpl"},
	{"/wifi/wifiscan.cgi", cgiWiFiScan, NULL},
	{"/wifi/wifi.tpl", cgiEspFsTemplate, tplWlan},
	{"/wifi/connect.cgi", cgiWiFiConnect, NULL},
	{"/wifi/connstatus.cgi", cgiWiFiConnStatus, NULL},
	{"/wifi/setmode.cgi", cgiWiFiSetMode, NULL},

	{"/websocket/ws.cgi", cgiWebsocket, myWebsocketConnect},

	{"*", cgiEspFsHook, NULL}, //Catch-all cgi function for the filesystem
	{NULL, NULL, NULL}
};


#ifdef SHOW_HEAP_USE
static ETSTimer prHeapTimer;

static void ICACHE_FLASH_ATTR prHeapTimerCb(void *arg) {
	os_printf("Heap: %ld\n", (unsigned long)system_get_free_heap_size());
}
#endif

//Main routine. Initialize stdout, the I/O, filesystem and the webserver and we're done.
void user_init(void) {
	stdoutInit();
	ioInit();
	captdnsInit();

	// 0x40200000 is the base address for spi flash memory mapping, ESPFS_POS is the position
	// where image is written in flash that is defined in Makefile.
#ifdef ESPFS_POS
	espFsInit((void*)(0x40200000 + ESPFS_POS));
#else
	espFsInit((void*)(webpages_espfs_start));
#endif
	httpdInit(builtInUrls, 80);
#ifdef SHOW_HEAP_USE
	os_timer_disarm(&prHeapTimer);
	os_timer_setfn(&prHeapTimer, prHeapTimerCb, NULL);
	os_timer_arm(&prHeapTimer, 3000, 1);
#endif
	os_printf("\nReady\n");
}

void user_rf_pre_init() {
	//Not needed, but some SDK versions want this defined.
}