/*
 * License (GPL):
  
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.

 * Author: © 2020 by Jos Boersema
 *
 */

// --------------------------------------v---------------------------------------
//                                 Configuration:
// --------------------------------------v---------------------------------------

// See the user configuration file: ./base_numpad.h

// --------------------------------------^---------------------------------------
//            Below here no more comfortable configuration options.....
// --------------------------------------^---------------------------------------

// This is moved into ./user_config.h, because global #defines are affected.
//((#include "./base_numpad.h" // Pull in the user configuration))

        /*  ⬇ */

    /* Layer _..._BASE: default BASE layer (Dvorak)
     *
     * This thing is different from the usual different letters arrangement.
     * It is a numbers pad, one for the left hand, and one for the right
     * hand. Both are as identical as possible. The use case is the same as
     * a number pad keyboard: single handed numbers input.
     *
     * The number 5 is under the middle finger home row, as expected for blind
     * number pad typing.
     *
     * The left/upper key, where normally BASE is located, is now OTHER_BASE.
     * That switches the board to the ‛Default’ layout, which is effectively the
     * same way as a return to BASE in the sense of BASE being the letters/layer
     * switch layer. “Other Base” reached from the normal letters/layer-switching 
     * BASE layout will then turn the keyboard into these number pads layers.
     *
     * A modified Numbers&Symbols layer _NSY is still supplied with this Numbers
     * Pad layout (as with other Base layers).
     * 
     * The standard numbers pad layer _PAD also still exists. That one has the
     * numbers arranged differently. 
     *
     */ 

// When putting this layer on ‛Default’, it produced undesired side effects:
// • _RAR and _MOV hold keys on the ‛Alternate’ letters layer, failed to switch back.
// • Parts of the Numbers Pad keys got activated through transparent layer switch keys on letters layer.
// Since there is no use for Numpad on ‛Default’ Base anyway, this is simply not supported, which seems to solve the problem.


# ifndef NUMPAD_BASE_SINGLE 

    [ _ALT_BASE ] = LAYOUT_redefined (

/*
     Layer _..._BASE (Number pad, square layout)
    
     <pink2   <pinky<ring <middl<index<indx2| indx2>index>middl>ring>pin>pink2>
                                           <|>
     !AlterGo Bspc  7     8     9     -     | Bspc  7     8     9    -   Bspc  //!AlterGo: to _DEF_BASE
     =         *    4     5     6     +     | *     4     5     6    +      =
     _NSY¹     /    1     2     3     ,     | /     1     2     3    ,   _NSY¹ 
     ------------------------------------------------------------------------
                   xxx     0     .     Ent  | NumL  0     .     Ent
                                           <|>
                   <1   ±  <2    <3    <4   | 4>    3> ±  2>    1>  
                        …                   |          …²

     Layer _..._BASE (Number pad, with NumLock off)
    
     <pink2   <pinky<ring <middl<index<indx2| indx2>index>middl>ring >pin>pink2>
                                           <|>
     !AlterGo Bspc  Home  Up    PgUp  -     | Bspc  Home  Up    PgUp  -   Bspc  //!AlterGo: to _DEF_BASE 
     =         *    Left  5     Right +     | *     Left  5     Right +      =  // modified 5
     _NSY¹     /    End   Down  PgDn  ,     | /     End   Down  PgDn  ,   _NSY¹
     -------------------------------------------------------------------------
                   xxx     Ins   Del   Ent  | NumL  Ins   Del   Ent
                                           <|>
                   <1   ±  <2    <3    <4   | 4>    3>  ± 2>    1>  
                        …                   |           …² 
 
     ₁) Toggle to the accompanying Super-Sub-Script (_NSY) layer.
     ₂) Note anomaly: additional hardware key ‛arrow’ shifted one to the left.

*/
//
//      <pink2        , <pinky         , <ring   , <middl  , <indx   ,        <ind|, indx>          , inde>   , midd>   , ring>   , pink>       , pink2>      ,
//      -*!-          ,                ,         ,         ,         ,           <|,>               ,         ,         ,         ,             ,             ,
        OTHER_BASE_GO , KC_BSPC        , KC_KP_7 , KC_KP_8 , KC_KP_9 , KC_KP_MINUS , KC_BSPC        , KC_KP_7 , KC_KP_8 , KC_KP_9 , KC_KP_MINUS , KC_BSPC     ,
        KC_KP_EQUAL   , KC_KP_ASTERISK , KC_KP_4 , KC_KP_5 , KC_KP_6 , KC_KP_PLUS  , KC_KP_ASTERISK , KC_KP_4 , KC_KP_5 , KC_KP_6 , KC_KP_PLUS  , KC_KP_EQUAL ,
        CTO_NUMS      , KC_KP_SLASH    , KC_KP_1 , KC_KP_2 , KC_KP_3 , KC_KP_COMMA , KC_KP_SLASH    , KC_KP_1 , KC_KP_2 , KC_KP_3 , KC_KP_COMMA , CTO_NUMS    ,
//      -------------------------------------------------------------------------------------------------------------------------------------------------------
        XXXXXXX

#     ifdef TRANSMINIVAN_LEFTSIDE
                      , TRANS_LEFT  
#     endif

#     ifdef MORE_KEY__COMMAND
                      , MORE_key1 // Note anomaly, not MORE_key1_BASE: numpad is treated as a common layer here, because that is ± how it functions.
#     endif

                      , KC_KP_0    , KC_KP_DOT , KC_KP_ENTER     

#     ifdef TRANSMINIVAN_MIDLEFT
                                               , TRANS_MIDLEFT 
#     endif

                                                               , KC_NUM , KC_KP_0
// ---⬇
// Note anomaly: the additional 'arrow' hardware key is shifted one to the
// left, compared to other Base layouts, and so is TRANS_RIGHT This is to
// maintain 'window/command' key on the same key between layers.

#     ifdef TRANSMINIVAN_RIGHTSIDE
                                                                                      , TRANS_RIGHT  
#     endif                                                                              
                                                                                     
#     ifdef MORE_KEY__ARROW                                                              
                                    
                                                                                    //, MORE_key2   
                                                                                      , KC__YGUI

// Note anomaly: not the usual configurable key (MORE_key2), but GUI. This
// is because position has shifted already, and this GUI allows all the usual
// keys on a 100% keyboard to be reached with all modifiers, including GUIs,
// if 'command' hardware key is included. Unfortunately this causes a gap
// in the numpad layout, but pressing GUI by itself in error will unlikely
// produce serious mistakes.  Maintaining similar keys between layers seems
// more important. Since Numpad already is a navigation cluster, it seems
// more important to allow all keys to be reachable with all modifiers,
// including GUIs, than to have a quick switch over to the _MOV layer here.
// Obviously it is fair enough to do this differently, but if someone needs a
// Numpad + either GUI key combination, that could be a real problem without
// GUIs here, whereas adding a _MOV switch is a matter of convenience. It
// seems important to be able to type anything a regular 100% keyboard can,
// or as near to it as possible.
//
// These anomalies are the same for all the Numpad layers here.
                                                                                  
#     endif                                                                              
// ---⬆
                                                                                      , KC_KP_DOT 
                                                                                     
                                                                                                 , KC_KP_ENTER
//                    ,            ,           ,             <|,>           ,         ,          ,
//      <1      ±  ±  , <2         , <3        , <4           |, 4>         , 3> ± ±  , 2>       ,      1>

                      ),

        /* ⬆⬇ */

    /* Layer _ALT_NSY: super-/sub-script numbers numpad, square layout
     */

    [ _ALT_NSY ] = LAYOUT_redefined (

/*
     Layer _..._BASE (super-/sub-script numbers, Numlock on/off)
    
     <pink2   <pinky<ring <middl<index<indx2| indx2>index>middl>ring>pin>pink2>
                                           <|>
     BASE     Bspc  ⁷₇    ⁸₈    ⁹₉    -     | Bspc  ⁷₇    ⁸₈    ⁹₉   -   Bspc
     =         *    ⁴₄    ⁵₅    ⁶₆    +     | *     ⁴₄    ⁵₅    ⁶₆   +      =
     LSht      /    ¹₁    ²₂    ³₃    ,     | /     ¹₁    ²₂    ³₃   ,   RSht
     -*-                                   <|>                            -*- //(toggle) Access on Base
     ------------------------------------------------------------------------
                   xxx    ⁰₀     .DEL  Ent  | xxx   ⁰₀    .DEL  Ent  
                                           <|>      
                   <1   ±  <2    <3    <4   | 4>    3>  ± 2>    1>  
                        …                   |           …¹  

     ₁) Note anomaly: additional hardware key ‛arrow’ shifted one to the left.

*/
//High/low numbers guide:
//¹₁         ²₂         ³₃         ⁴₄         ⁵₅       | ⁶₆         ⁷₇         ⁸₈         ⁹₉         ⁰₀       
//XP_DRA_BA  XP_DRA_BB  XP_DRA_BC  XP_DRA_BD  XP_DRA_BE  XP_DRA_BF  XP_DRA_BG  XP_DRA_BH  XP_DRA_BI  XP_DRA_BJ
//
//      <pink2      , <pinky         , <ring     , <middl    , <indx     ,        <ind|, indx>          , inde>     , midd>     , ring>     , pink>       , pink2>      ,
//      -*!-        ,                ,           ,           ,           ,           <|,>               ,           ,           ,           ,             ,             ,
        CTO_BASE    , KC_BSPC        , XP_DRA_BG , XP_DRA_BH , XP_DRA_BI , KC_KP_MINUS , KC_BSPC        , XP_DRA_BG , XP_DRA_BH , XP_DRA_BI , KC_KP_MINUS , KC_BSPC     ,
        KC_KP_EQUAL , KC_KP_ASTERISK , XP_DRA_BD , XP_DRA_BE , XP_DRA_BF , KC_KP_PLUS  , KC_KP_ASTERISK , XP_DRA_BD , XP_DRA_BE , XP_DRA_BF , KC_KP_PLUS  , KC_KP_EQUAL ,
        KC_LSFT     , KC_KP_SLASH    , XP_DRA_BA , XP_DRA_BB , XP_DRA_BC , KC_KP_COMMA , KC_KP_SLASH    , XP_DRA_BA , XP_DRA_BB , XP_DRA_BC , KC_KP_COMMA , KC_RSFT     ,
//      -----------------------------------------------------------------------------------------------------------------------------------------------------------------
        XXXXXXX   

#     ifdef TRANSMINIVAN_LEFTSIDE
                    , TRANS_LEFT
#     endif

#     ifdef MORE_KEY__COMMAND
                    , MORE_key1
#     endif

                    , XP_DRA_BJ , KC_KP_DOT , KC_KP_ENTER 

#     ifdef TRANSMINIVAN_MIDLEFT
                                                          , TRANS_MIDLEFT  
#     endif

                                                          , XXXXXXX       , XP_DRA_BJ 

// See comment on the first layout in this file (double handed Base layer), about the next few keys:
// ---⬇

#     ifdef TRANSMINIVAN_RIGHTSIDE
                                                                                      , TRANS_RIGHT
#     endif                                                                                       
                                                                                              
#     ifdef MORE_KEY__ARROW                                                                       
                                                                                    //, MORE_key2   
                                                                                      , KC__YGUI
#     endif                                                                                                   
// ---⬆
                                                                                      , KC_KP_DOT   
                                                                                                          
                                                                                                  , KC_KP_ENTER
//                  ,           ,           ,           <|,>              ,           ,           ,
//      <1    ±  ±  , <2        , <3        , <4         |, 4>            , 3>  ±  ±  , 2>        ,       1>

                      ),

        /* ⬆⬇ */

# else // NUMPAD_BASE_SINGLE is defined ====================================================================

    [ _ALT_BASE ] = LAYOUT_redefined (

/*
     
     * Layer Numbers Pad on Base:
     *        « See also documentation in keymap.c at _PAD layer, of which this is almost entirely a copy »
     *        One difference is the key to go to the _ALT_NSY layer (denoted “NUMS:” just below).
     *        The other difference is the key to switch to default Base and also immediately goes there
     *        (denoted “!AlterGo” here).
     
     Layer _ALT_BASE (Number pad, with NumLock on)
    
     <pink2   <pinky<ring <middl<index<indx2| indx2>index>middl>ring>pin>pink2>
                                           <|>
     !AlterGo NUMS: xxx   xxx   xxx   xxx   | =     7     8     9    -   Bspc  // NUMS: to ¹/₁
     LCtl     xxx   xxx   xxx   xxx   xxx   | *     4     5     6    +   RCtl
     LSht     xxx   xxx   xxx   xxx   xxx   | /     1     2     3    ,   RSht  
     ------------------------------------------------------------------------
                   LAlt   Del    Tab   Ent  | NumL  0     .     RAlt      
                                           <|>           
                   <1   ±  <2    <3    <4   | 4>    3> ±  2>    1>  
                        …                   |          …¹

     Layer _ALT_BASE (Number pad, with NumLock off)
    
     <pink2   <pinky<ring <middl<index<indx2| indx2>index>middl>ring >pin>pink2>
                                           <|>
     !AlterGo NUMS: xxx   xxx   xxx   xxx   | =     Home  Up    PgUp  -   Bspc  // NUMS: to ¹/₁
     LCtl     xxx   xxx   xxx   xxx   xxx   | *     Left  5     Right +   RCtl  // modified 5
     LSht     xxx   xxx   xxx   xxx   xxx   | /     End   Down  PgDn  ,   RSht  
     -------------------------------------------------------------------------
                   LAlt   Del    Tab   Ent  | NumL  Ins   Del   RAlt      
                                           <|>
                   <1   ±  <2    <3    <4   | 4>    3> ±  2>    1>  
                        …                   |          …¹

     ₁) Note anomaly: additional hardware key ‛arrow’ shifted one to the left.
 
*/

//High/low numbers guide:
//¹₁         ²₂         ³₃         ⁴₄         ⁵₅       | ⁶₆         ⁷₇         ⁸₈         ⁹₉         ⁰₀       
//XP_DRA_BA  XP_DRA_BB  XP_DRA_BC  XP_DRA_BD  XP_DRA_BE  XP_DRA_BF  XP_DRA_BG  XP_DRA_BH  XP_DRA_BI  XP_DRA_BJ
//
//      <pink2        , <pinky   , <ring   , <middl  , <index  , <indx2 |, indx2>         , index>  , middl>  , ring>   , pinky>      , pink2>  ,
//                    ,          ,         ,         ,         , -*-   <|,>               ,         ,         ,         ,             ,         ,
        OTHER_BASE_GO , CTO_NUMS , XXXXXXX , XXXXXXX , XXXXXXX , XXXXXXX , KC_KP_EQUAL    , KC_KP_7 , KC_KP_8 , KC_KP_9 , KC_KP_MINUS , KC_BSPC ,
        KC_LCTL       , XXXXXXX  , XXXXXXX , XXXXXXX , XXXXXXX , XXXXXXX , KC_KP_ASTERISK , KC_KP_4 , KC_KP_5 , KC_KP_6 , KC_KP_PLUS  , KC_RCTL ,
        KC_LSFT       , XXXXXXX  , XXXXXXX , XXXXXXX , XXXXXXX , XXXXXXX , KC_KP_SLASH    , KC_KP_1 , KC_KP_2 , KC_KP_3 , KC_KP_COMMA , KC_RSFT ,
//      ------------------------------------------------------------------------------------------------------------------------------------
        KC_LALT 

#     ifdef TRANSMINIVAN_LEFTSIDE
                , TRANS_LEFT  
#     endif

#     ifdef MORE_KEY__COMMAND
                , MORE_key1
#     endif

                , KC_DEL     , KC_TAB , KC_KP_ENTER

#     ifdef TRANSMINIVAN_MIDLEFT
                                                    , TRANS_MIDLEFT
#     endif

                                                    , KC_NUM , KC_KP_0 

// See comment on the first layout in this file (double handed Base layer), about the next few keys:
// ---⬇

#     ifdef TRANSMINIVAN_RIGHTSIDE
                                                                           , TRANS_RIGHT   
#     endif                                                                                     
                                                                                            
#     ifdef MORE_KEY__ARROW                                                                     
                                                                         //, MORE_key2   
                                                                           , KC__YGUI
#     endif                                                                                                 
// ---⬆
                                                                           , KC_KP_DOT  

                                                                                         , KC_RALT
//              ,            ,        ,           <|,>           ,         ,             ,
//   <1  ± ±    , <2         , <3     , <4         |, 4>         , 3> ± ±  , 2>          ,       1>

                      ),

        /* ⬆⬇ */

    [ _ALT_NSY ] = LAYOUT_redefined (

/*
     
     * Layer Numbers Pad on Base:
     *        This layer is the same as the above, except the numbers are in super-/sub-script.
     *
     
     Layer _ALT_NSY (Number pad, with NumLock on/off)
    
     <pink2   <pinky<ring <middl<index<indx2| indx2>index>middl>ring>pin>pink2>
                                           <|>
     BASE     xxx   xxx   xxx   xxx   xxx   | =     ⁷₇    ⁸₈    ⁹₉   -   Bspc
     LCtl     xxx   xxx   xxx   xxx   xxx   | *     ⁴₄    ⁵₅    ⁶₆   +   RCtl
     LSht     xxx   xxx   xxx   xxx   xxx   | /     ¹₁    ²₂    ³₃   ,   RSht  
     ------------------------------------------------------------------------
                   LAlt   Del    Tab   Ent  | xxx   ⁰₀    .DEL  RAlt      
                                           <|>           
                   <1   ±  <2    <3    <4   | 4>    3> ±  2>    1>  
                        …                   |          …¹                 

     ₁) Note anomaly: additional hardware key ‛arrow’ shifted one to the left.

*/

//High/low numbers guide:
//¹₁         ²₂         ³₃         ⁴₄         ⁵₅       | ⁶₆         ⁷₇         ⁸₈         ⁹₉         ⁰₀       
//XP_DRA_BA  XP_DRA_BB  XP_DRA_BC  XP_DRA_BD  XP_DRA_BE  XP_DRA_BF  XP_DRA_BG  XP_DRA_BH  XP_DRA_BI  XP_DRA_BJ
//
//      <pink2   , <pinky  , <ring   , <middl  , <index  , <indx2 |, indx2>         , index>    , middl>    , ring>     , pinky>      , pink2>  ,
//               ,         ,         ,         ,         , -*-   <|,>               ,           ,           ,           ,             ,         ,
        CTO_BASE , XXXXXXX , XXXXXXX , XXXXXXX , XXXXXXX , XXXXXXX , KC_KP_EQUAL    , XP_DRA_BG , XP_DRA_BH , XP_DRA_BI , KC_KP_MINUS , KC_BSPC ,
        KC_LCTL  , XXXXXXX , XXXXXXX , XXXXXXX , XXXXXXX , XXXXXXX , KC_KP_ASTERISK , XP_DRA_BD , XP_DRA_BE , XP_DRA_BF , KC_KP_PLUS  , KC_RCTL ,
        KC_LSFT  , XXXXXXX , XXXXXXX , XXXXXXX , XXXXXXX , XXXXXXX , KC_KP_SLASH    , XP_DRA_BA , XP_DRA_BB , XP_DRA_BC , KC_KP_COMMA , KC_RSFT ,
//      -----------------------------------------------------------------------------------------------------------------------------------
        KC_LALT 

#     ifdef TRANSMINIVAN_LEFTSIDE
                 , TRANS_LEFT   
#     endif

#     ifdef MORE_KEY__COMMAND
                 , MORE_key1
#     endif

                 , KC_DEL     , KC_TAB , KC_KP_ENTER

#     ifdef TRANSMINIVAN_MIDLEFT
                                       , TRANS_MIDLEFT
#     endif

                                                       , XXXXXXX , XP_DRA_BJ

// See comment on the first layout in this file (double handed Base layer), about the next few keys:
// ---⬇

#     ifdef TRANSMINIVAN_RIGHTSIDE
                                                                             , TRANS_RIGHT
#     endif                                                                              
                                                                                     
#     ifdef MORE_KEY__ARROW                                                              
                                                                           //, MORE_key2   
                                                                             , KC__YGUI
#     endif                                                                                          
// ---⬆
                                                                                         , KC_KP_DOT    

                                                                                         , KC_RALT
//               ,            ,        ,             <|,>        ,           ,           ,
//      <1  ± ±  , <2         , <3     , <4           |, 4>      , 3>  ± ±   , 2>        ,       1>

                      ),

# endif // NUMPAD_BASE_SINGLE 

        /* ⬆⬇ */