#include <string.h>
#include <SDL.h>

#include "toolkit.h"
#include "log.h"
#include "lephisto.h"
#include "pilot.h"
#include "space.h"
#include "player.h"
#include "plasmaf.h"
#include "mission.h"
#include "ltime.h"
#include "save.h"
#include "land.h"
#include "rng.h"
#include "menu.h"

#define MAIN_WIDTH          130
#define MAIN_HEIGHT         250

#define MENU_WIDTH          130
#define MENU_HEIGHT         200

#define INFO_WIDTH          360
#define INFO_HEIGHT         280

#define OUTFITS_WIDTH       400
#define OUTFITS_HEIGHT      200

#define MISSIONS_WIDTH      600
#define MISSIONS_HEIGHT     400

#define DEATH_WIDTH         130
#define DEATH_HEIGHT        150

#define BUTTON_WIDTH        90
#define BUTTON_HEIGHT       30

#define menu_Open(f)            (menu_open |= (f))
#define menu_Close(f)           (menu_open ^= (f))

int menu_open = 0;

// Main menu.
void menu_main_close(void);
static void menu_main_load(char* str);
static void menu_main_new(char* str);
// Small menu.
static void menu_small_close(char* str);
static void edit_options(void);
static void exit_game(void);
// Information menu.
static void menu_info_close(char* str);
// Outfits submenu.
static void info_outfits_menu(char* str);
// Mission submenu.
static void info_missions_menu(char* str);
static void mission_menu_abort(char* str);
static void mission_menu_genList(int first);
static void mission_menu_update(char* str);
// Death menu.
static void menu_death_main(char* str);
// Generic.
static void menu_generic_close(char* str);

void menu_main(void) {
  unsigned int bwid, wid;
  glTexture* tex;

  tex = pf_genFractal(gl_screen.w, gl_screen.h, 5.);

  // Create background image window.
  bwid = window_create("BG", -1, -1, gl_screen.w, gl_screen.h);
  window_addRect(bwid, 0, 0, gl_screen.w, gl_screen.h, "rctBG", &cBlack, 0);
  window_addImage(bwid, 0, 0, "imgBG", tex, 0);
  window_imgColour(bwid, "imgBG", &cPurple);

  // Create menu window.
  wid = window_create("Main Menu", -1, -1, MAIN_WIDTH, MAIN_HEIGHT);
  window_addButton(wid, 20, 20 + (BUTTON_HEIGHT+20)*3,
                   BUTTON_WIDTH, BUTTON_HEIGHT,
                   "btnLoad", "Load Game", menu_main_load);
  window_addButton(wid, 20, 20 + (BUTTON_HEIGHT+20)*2,
                   BUTTON_WIDTH, BUTTON_HEIGHT,
                   "btnNew", "New Game", menu_main_new);
  window_addButton(wid, 20, 20 + (BUTTON_HEIGHT+20),
                   BUTTON_WIDTH, BUTTON_HEIGHT,
                   "btnOptions", "Options", (void(*)(char*)) edit_options);
  window_addButton(wid, 20, 20, BUTTON_WIDTH, BUTTON_HEIGHT,
                   "btnExit", "Exit", (void(*)(char*)) exit_game);

  menu_Open(MENU_MAIN);
}

void menu_main_close(void) {
  window_destroy(window_get("Main Menu"));

  gl_freeTexture(window_getImage(window_get("BG"), "imgBG"));
  window_destroy(window_get("BG"));

  menu_Close(MENU_MAIN);
}

static void menu_main_load(char* str) {
  (void)str;

  load_game_menu();
}

static void menu_main_new(char* str) {
  (void)str;

  menu_main_close();
  player_new();
}

// Ze ingame menu.
// Small ingame menu.
void menu_small(void) {
  if(menu_isOpen(MENU_MAIN) ||
     menu_isOpen(MENU_SMALL) ||
     menu_isOpen(MENU_DEATH))
    return; // It's already open..

  unsigned int wid;

  wid = window_create("Menu", -1, -1, MENU_WIDTH, MENU_HEIGHT);

  window_addButton(wid, 20, 20 + BUTTON_HEIGHT*2 + 20*2,
                   BUTTON_WIDTH, BUTTON_HEIGHT,
                   "btnResume", "Resume", menu_small_close);

  window_addButton(wid, 20, 20, BUTTON_WIDTH, BUTTON_HEIGHT,
                   "btnExit", "Exit", (void(*)(char*))exit_game);

  window_addButton(wid, 20, 20 + BUTTON_HEIGHT + 20,
                   BUTTON_WIDTH, BUTTON_HEIGHT,
                   "btnOptions", "Options", (void(*)(char*))edit_options);

  menu_Open(MENU_SMALL);
}

static void menu_small_close(char* str) {
  if(strcmp(str, "btnResume")==0)
    window_destroy(window_get("Menu"));

  menu_Close(MENU_SMALL);
}

// Edit the options.
static void edit_options(void) {
  // TODO
}

// Exit the game.
static void exit_game(void) {
  // If landed we must save anyways.
  if(landed) {
    // Increment time to match takeoff.
    ltime_inc(RNG(2*LTIME_UNIT_LENGTH, 3*LTIME_UNIT_LENGTH));
    save_all();
  }
  SDL_Event quit;
  quit.type = SDL_QUIT;
  SDL_PushEvent(&quit);
}

// Info menu.
void menu_info(void) {
  if(menu_isOpen(MENU_INFO)) return;

  char str[128];
  char* lt;
  unsigned int wid;
  wid = window_create("Info", -1, -1, INFO_WIDTH, INFO_HEIGHT);

  // Pilot generics.
  lt = ltime_pretty(ltime_get());
  window_addText(wid, 20, 20, 120, INFO_HEIGHT-60,
                 0, "txtDPilot", &gl_smallFont, &cDConsole,
                 "Pilot:\n"
                 "Date:\n"
                 "Combat\n"
                 "  Rating:"
                 "\n"
                 "Ship:\n"
                 "Fuel:\n");

  snprintf(str, 128,
           "%s\n"
           "%s\n"
           "\n"
           "%s\n"
           "\n"
           "%s\n"
           "%d %d jumps)",
           player_name, lt, player_rating(), player->name,
           (int)player->fuel, (int)(player->fuel) / HYPERSPACE_FUEL);

  window_addText(wid, 80, 20,
                 INFO_WIDTH-120-BUTTON_WIDTH, INFO_HEIGHT-60,
                 0, "txtPilot", &gl_smallFont, &cBlack, str);
  free(lt);

  // Menu.
  window_addButton(wid, -20, (20 + BUTTON_HEIGHT)*4 + 20,
                   BUTTON_WIDTH, BUTTON_HEIGHT,
                   player->ship->name, "Ship", ship_view);
  window_addButton(wid, -20, (20 + BUTTON_HEIGHT)*3 + 20,
                   BUTTON_WIDTH, BUTTON_HEIGHT,
                   "btnOutfits", "Outfits", info_outfits_menu);
  window_addButton(wid, -20, (20 + BUTTON_HEIGHT)*2 + 20,
                   BUTTON_WIDTH, BUTTON_HEIGHT,
                   "btnCargo", "Cargo", NULL);
  window_addButton(wid, -20, 20 + BUTTON_HEIGHT + 20,
                   BUTTON_WIDTH, BUTTON_HEIGHT,
                   "btnMissions", "Missions", info_missions_menu);
  window_addButton(wid, -20, 20,
                   BUTTON_WIDTH, BUTTON_HEIGHT,
                   "btnClose", "Close", menu_info_close);


  menu_Open(MENU_INFO);
}

static void menu_info_close(char* str) {
  if(strcmp(str, "btnClose")==0)
    window_destroy(window_get("Info"));

  menu_Close(MENU_INFO);
}

static void info_outfits_menu(char* str) {
  (void) str;
  char* buf;
  unsigned int wid;
  wid = window_create("Outfits", -1, -1, OUTFITS_WIDTH, OUTFITS_HEIGHT);

  window_addText(wid, 20, -40, 100, OUTFITS_HEIGHT-40,
                 0, "txtLabel", &gl_smallFont, &cDConsole,
                 "Ship Outfits:");

  buf = pilot_getOutfits(player);

  window_addText(wid, 20, -45-gl_smallFont.h,
                 OUTFITS_WIDTH-40, OUTFITS_HEIGHT-60,
                 0, "txtOutfits", &gl_smallFont, &cBlack, buf);
  free(buf);

  window_addButton(wid, -20, 20,
                   BUTTON_WIDTH, BUTTON_HEIGHT,
                   "closeOutfits", "Close", menu_generic_close);
}

// Show the player's active missions.
static void info_missions_menu(char* str) {
  (void)str;
  unsigned int wid;

  wid = window_create("Missions", -1, -1, MISSIONS_WIDTH, MISSIONS_HEIGHT);

  // Buttons.
  window_addButton(wid, -20, 20, BUTTON_WIDTH, BUTTON_HEIGHT,
                   "closeMissions", "Back", menu_generic_close);

  window_addButton(wid, -20, 40+BUTTON_HEIGHT,
                   BUTTON_WIDTH, BUTTON_HEIGHT, "btnAbortMission", "Abort",
                   mission_menu_abort);

  // Text.
  window_addText(wid, 300+40, -60,
                 200, 40, 0, "txtSReward",
                 &gl_smallFont, &cDConsole, "Reward:");

  window_addText(wid, 300+100, -60,
                 140, 40, 0, "txtReward", &gl_smallFont, &cBlack, NULL);

  window_addText(wid, 300+40, -100,
                 200, MISSIONS_HEIGHT - BUTTON_WIDTH - 120, 0,
                 "txtDesc", &gl_smallFont, &cBlack, NULL);

  // List.
  mission_menu_genList(1);
}

static void mission_menu_genList(int first) {
  int i, j;
  char** misn_names;
  unsigned int wid;

  wid = window_get("Missions");

  if(!first)
    window_destroyWidget(wid, "lstMission");

  // List.
  misn_names = malloc(sizeof(char*) * MISSION_MAX);
  j = 0;
  for(i = 0; i < MISSION_MAX; i++)
    if(player_missions[i].id != 0)
      misn_names[j++] = strdup(player_missions[i].title);
  if(j == 0) {
    // No missions.
    free(misn_names);
    misn_names = malloc(sizeof(char*));
    misn_names[0] = strdup("No Missions");
    j = 1;
  }
  window_addList(wid, 20, -40,
                 300, MISSIONS_HEIGHT-60,
                 "lstMission", misn_names, j, 0, mission_menu_update);

  mission_menu_update(NULL);
}

static void mission_menu_update(char* str) {
  char* active_misn;
  Mission* misn;
  unsigned int wid;

  (void)str;

  wid = window_get("Missions");

  active_misn = toolkit_getList(wid, "lstMission");
  if(strcmp(active_misn, "No Missions")==0) {
    window_modifyText(wid, "txtReward", "None");
    window_modifyText(wid, "txtDesc", "You currently have no active missions.");
    window_disableButton(wid, "btnAbortMission");
    return;
  }
  misn = &player_missions[toolkit_getListPos(wid, "lstMission")];
  window_modifyText(wid, "txtReward", misn->reward);
  window_modifyText(wid, "txtDesc", misn->desc);
  window_enableButton(wid, "btnAbortMission");
}

static void mission_menu_abort(char* str) {
  (void)str;
  char* selected_misn;
  int pos;
  unsigned int wid;
  Mission* misn;

  wid = window_get("Missions");

  selected_misn = toolkit_getList(wid, "lstMission");

  if(dialogue_YesNo("Abort Mission",
        "Are you sure you want to abort this mission?")) {
    pos = toolkit_getListPos(wid, "lstMission");
    misn = &player_missions[pos];
    mission_cleanup(misn);
    memmove(misn, &player_missions[pos+1],
        sizeof(Mission) * (MISSION_MAX-pos-1));
    mission_menu_genList(0);
  }
}

// Pilot dead.
void menu_death(void) {
  unsigned int wid;
  wid = window_create("Death", -1, -1, DEATH_WIDTH, DEATH_HEIGHT);

  window_addButton(wid, 20, 20 + (BUTTON_HEIGHT + 20),
                   BUTTON_WIDTH, BUTTON_HEIGHT,
                   "btnMain", "MainMenu", menu_death_main);
  window_addButton(wid, 20, 20, BUTTON_WIDTH, BUTTON_HEIGHT,
                   "btnExit", "Exit", (void(*)(char*)) exit_game);

  menu_Open(MENU_DEATH);
}

static void menu_death_main(char* str) {
  (void)str;
  unsigned int wid;

  wid = window_get("Death");
  window_destroy(wid);
  menu_Close(MENU_DEATH);

  menu_main();
}

// Generic close approach.
static void menu_generic_close(char* str) {
  window_destroy(window_get(str+5)); // closeFoo -> Foo.
}