#pragma once

#include <stdint.h>
#include <stddef.h>

struct rgn;
#define THEME_BUILDER_DESIRED_REGION_SIZE (16*1024)

enum ax_color_cat {
    AX_COLOR_BACKGROUND = 0,
    AX_COLOR_SURFACE,
    AX_COLOR_PRIMARY,
    AX_COLOR_PRIMARY_ALT,
    AX_COLOR_SECONDARY,
    AX_COLOR_SECONDARY_ALT,
    AX_COLOR_ON_BACKGROUND,
    AX_COLOR_ON_SURFACE,
    AX_COLOR_ON_PRIMARY,
    AX_COLOR_ON_SECONDARY,
    AX_COLOR__COUNT,
};

enum ax_font_cat {
    AX_FONT_H1 = 0,
    AX_FONT_H2,
    AX_FONT_H3,
    AX_FONT_H4,
    AX_FONT_BODY,
    AX_FONT_BUTTON,
    AX_FONT__COUNT,
    AX_FONT__DEFAULT,
};

struct ax_theme {
    const char* fatal_err;
    int64_t colors[AX_COLOR__COUNT];
    const char* font_path[AX_FONT__COUNT];
    size_t font_size[AX_FONT__COUNT];
};

struct ax_theme_builder {
    struct rgn* rgn;
    const char* dflt_font_path;
    struct ax_theme thm;
};

int ax__string_to_color_cat(const char* str, enum ax_color_cat* out_cat);
int ax__string_to_font_cat(const char* str, enum ax_font_cat* out_cat);

void ax__theme_builder_init(
    struct ax_theme_builder* thmb, struct rgn* rgn);

char* ax__theme_make_error_buf(
    struct ax_theme_builder* thmb,
    size_t len);

void ax__theme_set_color(
    struct ax_theme_builder* thmb,
    enum ax_color_cat cat,
    int64_t val);

void ax__theme_set_font(
    struct ax_theme_builder* thmb,
    enum ax_font_cat cat,
    const char* path, size_t size);

void ax__theme_builder_finish(
    struct ax_theme_builder* thmb,
    struct rgn* dst_rgn,
    struct ax_theme** out_thm);

static inline int64_t ax__theme_color(
    struct ax_theme* thm,
    enum ax_color_cat i)
{
    return thm->colors[i];
}

static inline const char* ax__theme_font(
    struct ax_theme* thm,
    enum ax_font_cat i,
    size_t* out_size)
{
    if (out_size != NULL) {
        *out_size = thm->font_size[i];
    }
    return thm->font_path[i];
}


void ax__debug_theme(struct ax_theme* thm);