/*
4coder_experiments.cpp - Supplies extension bindings to the defaults with experimental new features.
*/

// TOP

#include "4coder_default_include.cpp"
#include "4coder_miblo_numbers.cpp"

#define NO_BINDING
#include "4coder_default_bindings.cpp"

#include <string.h>

// NOTE(allen): An experimental mutli-pasting thing

CUSTOM_COMMAND_SIG(multi_paste){
    Scratch_Block scratch(app);
    
    i32 count = clipboard_count(app, 0);
    if (count > 0){
        View_ID view = get_active_view(app, AccessOpen);
        Managed_Scope scope = view_get_managed_scope(app, view);
        
        u64 rewrite = 0;
        managed_variable_get(app, scope, view_rewrite_loc, &rewrite);
        if (rewrite == RewritePaste){
            managed_variable_set(app, scope, view_next_rewrite_loc, RewritePaste);
            u64 prev_paste_index = 0;
            managed_variable_get(app, scope, view_paste_index_loc, &prev_paste_index);
            i32 paste_index = (i32)prev_paste_index + 1;
            managed_variable_set(app, scope, view_paste_index_loc, paste_index);
            
            String_Const_u8 string = push_clipboard_index(app, scratch, 0, paste_index);
            
            String_Const_u8 insert_string = push_u8_stringf(scratch, "\n%.*s", string_expand(string));
            
            Buffer_ID buffer = view_get_buffer(app, view, AccessOpen);
            Range_i64 range = get_view_range(app, view);
            buffer_replace_range(app, buffer, Ii64(range.max), insert_string);
            view_set_mark(app, view, seek_pos(range.max + 1));
            view_set_cursor_and_preferred_x(app, view, seek_pos(range.max + insert_string.size));
            
            // TODO(allen): Send this to all views.
            Theme_Color paste = {};
            paste.tag = Stag_Paste;
            get_theme_colors(app, &paste, 1);
            view_post_fade(app, view, 0.667f, Ii64(range.max + 1, range.max + insert_string.size), paste.color);
        }
        else{
            paste(app);
        }
    }
}

static Range_i64
multi_paste_range(Application_Links *app, View_ID view, Range_i64 range, i32 paste_count, b32 old_to_new){
    Scratch_Block scratch(app);
    
    Range_i64 finish_range = range;
    if (paste_count >= 1){
        Buffer_ID buffer = view_get_buffer(app, view, AccessOpen);
        if (buffer != 0){
            i64 total_size = 0;
            for (i32 paste_index = 0; paste_index < paste_count; ++paste_index){
                Scratch_Block scratch(app);
                String_Const_u8 string = push_clipboard_index(app, scratch, 0, paste_index);
                total_size += string.size + 1;
            }
            total_size -= 1;
            
            if (total_size <= app->memory_size){
                i32 first = paste_count - 1;
                i32 one_past_last = -1;
                i32 step = -1;
                if (!old_to_new){
                    first = 0;
                    one_past_last = paste_count;
                    step = 1;
                }
                
                List_String_Const_u8 list = {};
                
                for (i32 paste_index = first; paste_index != one_past_last; paste_index += step){
                    if (paste_index != first){
                        string_list_push(scratch, &list, SCu8("\n", 1));
                    }
                    String_Const_u8 string = push_clipboard_index(app, scratch, 0, paste_index);
                    if (string.size > 0){
                        string_list_push(scratch, &list, string);
                    }
                }
                
                String_Const_u8 flattened = string_list_flatten(scratch, list);
                
                buffer_replace_range(app, buffer, range, flattened);
                i64 pos = range.min;
                finish_range.min = pos;
                finish_range.max = pos + total_size;
                view_set_mark(app, view, seek_pos(finish_range.min));
                view_set_cursor_and_preferred_x(app, view, seek_pos(finish_range.max));
                
                // TODO(allen): Send this to all views.
                Theme_Color paste;
                paste.tag = Stag_Paste;
                get_theme_colors(app, &paste, 1);
                view_post_fade(app, view, 0.667f, finish_range, paste.color);
            }
        }
    }
    return(finish_range);
}

static void
multi_paste_interactive_up_down(Application_Links *app, i32 paste_count, i32 clip_count){
    View_ID view = get_active_view(app, AccessOpen);
    i64 pos = view_get_cursor_pos(app, view);
    b32 old_to_new = true;
    Range_i64 range = multi_paste_range(app, view, Ii64(pos), paste_count, old_to_new);
    
    Query_Bar bar = {};
    bar.prompt = string_u8_litexpr("Up and Down to condense and expand paste stages; R to reverse order; Return to finish; Escape to abort.");
    if (start_query_bar(app, &bar, 0) == 0) return;
    
    User_Input in = {};
    for (;;){
        in = get_user_input(app, EventOnAnyKey, EventOnEsc);
        if (in.abort) break;
        
        b32 did_modify = false;
        if (in.key.keycode == key_up){
            if (paste_count > 1){
                --paste_count;
                did_modify = true;
            }
        }
        else if (in.key.keycode == key_down){
            if (paste_count < clip_count){
                ++paste_count;
                did_modify = true;
            }
        }
        else if (in.key.keycode == 'r' || in.key.keycode == 'R'){
            old_to_new = !old_to_new;
            did_modify = true;
        }
        else if (in.key.keycode == '\n'){
            break;
        }
        
        if (did_modify){
            range = multi_paste_range(app, view, range, paste_count, old_to_new);
        }
    }
    
    if (in.abort){
        Buffer_ID buffer = view_get_buffer(app, view, AccessOpen);
        buffer_replace_range(app, buffer, range, SCu8(""));
    }
}

CUSTOM_COMMAND_SIG(multi_paste_interactive){
    i32 clip_count = clipboard_count(app, 0);
    if (clip_count > 0){
        multi_paste_interactive_up_down(app, 1, clip_count);
    }
}

CUSTOM_COMMAND_SIG(multi_paste_interactive_quick){
    i32 clip_count = clipboard_count(app, 0);
    if (clip_count > 0){
        u8 string_space[256];
        Query_Bar bar = {};
        bar.prompt = string_u8_litexpr("How Many Slots To Paste: ");
        bar.string = SCu8(string_space, (umem)0);
        bar.string_capacity = sizeof(string_space);
        query_user_number(app, &bar);
        
        i32 initial_paste_count = (i32)string_to_integer(bar.string, 10);
        initial_paste_count = clamp(1, initial_paste_count, clip_count);
        end_query_bar(app, &bar, 0);
        
        multi_paste_interactive_up_down(app, initial_paste_count, clip_count);
    }
}

// NOTE(allen): Some basic code manipulation ideas.

CUSTOM_COMMAND_SIG(rename_parameter)
CUSTOM_DOC("If the cursor is found to be on the name of a function parameter in the signature of a function definition, all occurences within the scope of the function will be replaced with a new provided string.")
{
    NotImplemented;
#if 0
    View_ID view = get_active_view(app, AccessOpen);
    Buffer_ID buffer = view_get_buffer(app, view, AccessOpen);
    i64 cursor_pos = view_get_cursor_pos(app, view);
    
    Arena *scratch = context_get_arena(app);
    Temp_Memory temp = begin_temp(scratch);
    
    Cpp_Get_Token_Result result = {};
    if (get_token_from_pos(app, buffer, cursor_pos, &result)){
        if (!result.in_whitespace_after_token){
            static const i32 stream_space_size = 512;
            Cpp_Token stream_space[stream_space_size];
            Stream_Tokens_DEP stream = {};
            
            if (init_stream_tokens(&stream, app, buffer, result.token_index, stream_space, stream_space_size)){
                i32 token_index = result.token_index;
                Cpp_Token token = stream.tokens[token_index];
                
                if (token.type == CPP_TOKEN_IDENTIFIER){
                    Cpp_Token original_token = token;
                    String_Const_u8 old_lexeme = push_token_lexeme(app, scratch, buffer, token);
                    
                    i32 proc_body_found = 0;
                    b32 still_looping = 0;
                    
                    ++token_index;
                    do{
                        for (; token_index < stream.end; ++token_index){
                            Cpp_Token *token_ptr = stream.tokens + token_index;
                            switch (token_ptr->type){
                                case CPP_TOKEN_BRACE_OPEN:
                                {
                                    proc_body_found = 1;
                                    goto doublebreak;
                                }break;
                                
                                case CPP_TOKEN_BRACE_CLOSE:
                                case CPP_TOKEN_PARENTHESE_OPEN:
                                {
                                    goto doublebreak; 
                                }break;
                            }
                        }
                        still_looping = forward_stream_tokens(&stream);
                    }while(still_looping);
                    doublebreak:;
                    
                    if (proc_body_found){
                        
                        u8 with_space[1024];
                        Query_Bar with = {};
                        with.prompt = string_u8_litexpr("New Name: ");
                        with.string = SCu8(with_space, (umem)0);
                        with.string_capacity = sizeof(with_space);
                        if (!query_user_string(app, &with)) return;
                        
                        String_Const_u8 replace_string = with.string;
                        
                        // TODO(allen): fix this up to work with arena better
                        i32 edit_max = Thousand(100);
                        Buffer_Edit *edits = push_array(scratch, Buffer_Edit, edit_max);
                        i32 edit_count = 0;
                        
                        if (edit_max >= 1){
                            Buffer_Edit edit = {};
                            edit.str_start = 0;
                            edit.len = (i32)replace_string.size;
                            edit.start = original_token.start;
                            edit.end = original_token.start + original_token.size;
                            
                            edits[edit_count] = edit;
                            edit_count += 1;
                        }
                        
                        i32 nesting_level = 0;
                        i32 closed_correctly = 0;
                        ++token_index;
                        still_looping = 0;
                        do{
                            for (; token_index < stream.end; ++token_index){
                                Cpp_Token *token_ptr = stream.tokens + token_index;
                                switch (token_ptr->type){
                                    case CPP_TOKEN_IDENTIFIER:
                                    {
                                        if (token_ptr->size == old_lexeme.size){
                                            String_Const_u8 other_lexeme = push_token_lexeme(app, scratch, buffer, *token_ptr);
                                            if (string_match(old_lexeme, other_lexeme)){
                                                Buffer_Edit edit = {};
                                                edit.str_start = 0;
                                                edit.len = (i32)replace_string.size;
                                                edit.start = token_ptr->start;
                                                edit.end = token_ptr->start + token_ptr->size;
                                                if (edit_count < edit_max){
                                                    edits[edit_count] = edit;
                                                    edit_count += 1;
                                                }
                                                else{
                                                    goto doublebreak2;
                                                }
                                            }
                                        }
                                    }break;
                                    
                                    case CPP_TOKEN_BRACE_OPEN:
                                    {
                                        ++nesting_level;
                                    }break;
                                    
                                    case CPP_TOKEN_BRACE_CLOSE:
                                    {
                                        if (nesting_level == 0){
                                            closed_correctly = 1;
                                            goto doublebreak2;
                                        }
                                        else{
                                            --nesting_level;
                                        }
                                    }break;
                                }
                            }
                            still_looping = forward_stream_tokens(&stream);
                        }while(still_looping);
                        doublebreak2:;
                        
                        if (closed_correctly){
                            buffer_batch_edit(app, buffer, (char*)replace_string.str, edits, edit_count);
                        }
                    }
                }
            }
        }
    }
    
    end_temp(temp);
#endif
}

typedef u32 Write_Explicit_Enum_Values_Mode;
enum{
    WriteExplicitEnumValues_Integers,
    WriteExplicitEnumValues_Flags,
};

static void
write_explicit_enum_values_parameters(Application_Links *app, Write_Explicit_Enum_Values_Mode mode){
    NotImplemented;
#if 0
    View_ID view = get_active_view(app, AccessOpen);
    Buffer_ID buffer = view_get_buffer(app, view, AccessOpen);
    
    i64 pos = view_get_cursor_pos(app, view);
    
    Arena *scratch = context_get_arena(app);
    Temp_Memory temp = begin_temp(scratch);
    
    Cpp_Get_Token_Result result = {};
    if (get_token_from_pos(app, buffer, pos, &result)){
        if (!result.in_whitespace_after_token){
            Cpp_Token stream_space[32];
            Stream_Tokens_DEP stream = {};
            
            if (init_stream_tokens(&stream, app, buffer, result.token_index, stream_space, 32)){
                i32 token_index = result.token_index;
                Cpp_Token token = stream.tokens[token_index];
                
                if (token.type == CPP_TOKEN_BRACE_OPEN){
                    ++token_index;
                    
                    i32 seeker_index = token_index;
                    Stream_Tokens_DEP seek_stream = begin_temp_stream_token(&stream);
                    
                    b32 closed_correctly = false;
                    b32 still_looping = false;
                    do{
                        for (; seeker_index < stream.end; ++seeker_index){
                            Cpp_Token *token_seeker = stream.tokens + seeker_index;
                            switch (token_seeker->type){
                                case CPP_TOKEN_BRACE_CLOSE:
                                closed_correctly = true;
                                goto finished_seek;
                                
                                case CPP_TOKEN_BRACE_OPEN:
                                goto finished_seek;
                            }
                        }
                        still_looping = forward_stream_tokens(&stream);
                    }while(still_looping);
                    finished_seek:;
                    end_temp_stream_token(&stream, seek_stream);
                    
                    if (closed_correctly){
                        i32 count_estimate = 1 + (seeker_index - token_index)/2;
                        
                        i32 edit_count = 0;
                        Buffer_Edit *edits = push_array(scratch, Buffer_Edit, count_estimate);
                        
                        List_String_Const_char list = {};
                        
                        closed_correctly = false;
                        still_looping = false;
                        u32 value = 0;
                        if (mode == WriteExplicitEnumValues_Flags){
                            value = 1;
                        }
                        
                        do{
                            for (;token_index < stream.end; ++token_index){
                                Cpp_Token *token_ptr = stream.tokens + token_index;
                                switch (token_ptr->type){
                                    case CPP_TOKEN_IDENTIFIER:
                                    {
                                        i32 edit_start = token_ptr->start + token_ptr->size;
                                        i32 edit_stop = edit_start;
                                        
                                        i32 edit_is_good = 0;
                                        ++token_index;
                                        do{
                                            for (; token_index < stream.end; ++token_index){
                                                token_ptr = stream.tokens + token_index;
                                                switch (token_ptr->type){
                                                    case CPP_TOKEN_COMMA:
                                                    {
                                                        edit_stop = token_ptr->start;
                                                        edit_is_good = 1;
                                                        goto good_edit;
                                                    }break;
                                                    
                                                    case CPP_TOKEN_BRACE_CLOSE:
                                                    {
                                                        edit_stop = token_ptr->start;
                                                        closed_correctly = 1;
                                                        edit_is_good = 1;
                                                        goto good_edit;
                                                    }break;
                                                }
                                            }
                                            still_looping = forward_stream_tokens(&stream);
                                        }while(still_looping);
                                        
                                        good_edit:;
                                        if (edit_is_good){
                                            i32 str_pos = (i32)(list.total_size);
                                            
                                            string_list_pushf(scratch, &list, " = %d", value);
                                            if (closed_correctly){
                                                string_list_push_lit(scratch, &list, "\n");
                                            }
                                            
                                            switch (mode){
                                                case WriteExplicitEnumValues_Integers:
                                                {
                                                    ++value;
                                                }break;
                                                case WriteExplicitEnumValues_Flags:
                                                {
                                                    if (value < (1 << 31)){
                                                        value <<= 1;
                                                    }
                                                }break;
                                            }
                                            
                                            i32 str_size = (i32)(list.total_size) - str_pos;
                                            
                                            Buffer_Edit edit;
                                            edit.str_start = str_pos;
                                            edit.len = str_size;
                                            edit.start = edit_start;
                                            edit.end = edit_stop;
                                            
                                            Assert(edit_count < count_estimate);
                                            edits[edit_count] = edit;
                                            ++edit_count;
                                        }
                                        if (!edit_is_good || closed_correctly){
                                            goto finished;
                                        }
                                    }break;
                                    
                                    case CPP_TOKEN_BRACE_CLOSE:
                                    {
                                        closed_correctly = 1;
                                        goto finished;
                                    }break;
                                }
                            }
                            
                            still_looping = forward_stream_tokens(&stream);
                        }while(still_looping);
                        
                        finished:;
                        if (closed_correctly){
                            String_Const_char text = string_list_flatten(scratch, list);
                            buffer_batch_edit(app, buffer, text.str, edits, edit_count);
                        }
                    }
                }
            }
        }
    }
    
    end_temp(temp);
#endif
}

CUSTOM_COMMAND_SIG(write_explicit_enum_values)
CUSTOM_DOC("If the cursor is found to be on the '{' of an enum definition, the values of the enum will be filled in sequentially starting from zero.  Existing values are overwritten.")
{
    write_explicit_enum_values_parameters(app, WriteExplicitEnumValues_Integers);
}

CUSTOM_COMMAND_SIG(write_explicit_enum_flags)
CUSTOM_DOC("If the cursor is found to be on the '{' of an enum definition, the values of the enum will be filled in to give each a unique power of 2 value, starting from 1.  Existing values are overwritten.")
{
    write_explicit_enum_values_parameters(app, WriteExplicitEnumValues_Flags);
}

//
// Rename All
//

struct Replace_Target{
    Replace_Target *next;
    Buffer_ID buffer_id;
    i32 start_pos;
};

extern "C" i32
get_bindings(void *data, i32 size){
    Bind_Helper context_ = begin_bind_helper(data, size);
    Bind_Helper *context = &context_;
    
    set_hook(context, hook_buffer_viewer_update, default_view_adjust);
    
    set_start_hook(context, default_start);
    set_open_file_hook(context, default_file_settings);
    set_new_file_hook(context, default_new_file);
    set_save_file_hook(context, default_file_save);
    set_end_file_hook(context, end_file_close_jump_list);
    
    set_input_filter(context, default_suppress_mouse_filter);
    set_command_caller(context, default_command_caller);
    set_render_caller(context, default_render_caller);
    
    set_scroll_rule(context, smooth_scroll_rule);
    set_buffer_name_resolver(context, default_buffer_name_resolution);
    set_modify_color_table_hook(context, default_modify_color_table);
    set_get_view_buffer_region_hook(context, default_view_buffer_region);
    
    default_keys(context);
    
    // NOTE(allen|a4.0.6): Command maps can be opened more than
    // once so that you can extend existing maps very easily.
    // You can also use the helper "restart_map" instead of
    // begin_map to clear everything that was in the map and
    // bind new things instead.
    begin_map(context, mapid_file);
    //bind(context, key_back, MDFR_ALT|MDFR_CTRL, kill_rect);
    //bind(context, ' ', MDFR_ALT|MDFR_CTRL, multi_line_edit);
    
    bind(context, key_page_up, MDFR_ALT, miblo_increment_time_stamp);
    bind(context, key_page_down, MDFR_ALT, miblo_decrement_time_stamp);
    
    bind(context, key_home, MDFR_ALT, miblo_increment_time_stamp_minute);
    bind(context, key_end, MDFR_ALT, miblo_decrement_time_stamp_minute);
    
    bind(context, 'b', MDFR_CTRL, multi_paste_interactive_quick);
    bind(context, 'A', MDFR_CTRL, replace_in_all_buffers);
    end_map(context);
    
    begin_map(context, default_code_map);
    bind(context, key_insert, MDFR_CTRL, write_explicit_enum_values);
    bind(context, key_insert, MDFR_CTRL|MDFR_SHIFT, write_explicit_enum_flags);
    bind(context, 'p', MDFR_ALT, rename_parameter);
    end_map(context);
    
    return(end_bind_helper(context));
}

// BOTTOM