#include "theme.h"
#include <cstring>
#include <map>
#include <array>

uint32_t base16[16];

bool theme_load(std::string filename)
{
    FILE *fp = fopen(filename.c_str(), "r");
    if(!fp)
        return false;

    for(int i = 0; i < 16; i++)
        base16[i] = 0xffffff;

    char entry[64], value[256];
    int colors_found = 0;

    while(fscanf(fp, " %64[^:]: \"%64[^\"\n]\"", entry, value) == 2) {
        if(strlen(entry) == 6 && !strncmp(entry, "base0", 5)) {
            int index = entry[5] - '0' - 7 * (entry[5] >= 'A')
                        - 32 * (entry[5] >= 'a');
            colors_found++;
            sscanf(value, "%x", &base16[index]);
        }
    }

    fclose(fp);
    return true;
}

fmt::text_style theme(int color)
{
    return fg(fmt::rgb(base16[color & 0xf]));
}

//---
// Built-in themes
//---

static std::map<std::string, std::array<uint32_t, 16>> builtin_themes = {
    /* Tomorrow Night by Chris Kempson (http://chriskempson.com) */
    {"tomorrow-night",
        {
            0x1d1f21,
            0x282a2e,
            0x373b41,
            0x969896,
            0xb4b7b4,
            0xc5c8c6,
            0xe0e0e0,
            0xffffff,
            0xcc6666,
            0xde935f,
            0xf0c674,
            0xb5bd68,
            0x8abeb7,
            0x81a2be,
            0xb294bb,
            0xa3685a,
        }},
};

bool theme_builtin(std::string name)
{
    if(!builtin_themes.count(name))
        return false;
    for(int i = 0; i < 16; i++)
        base16[i] = builtin_themes[name][i];
    return true;
}