#pragma once

#include <the_Foundation/range.h>
#include <the_Foundation/math.h>

enum iColorTheme {
    pureBlack_ColorTheme,
    dark_ColorTheme,
    light_ColorTheme,
    pureWhite_ColorTheme,
    max_ColorTheme
};

iLocalDef iBool isDark_ColorTheme(enum iColorTheme d) {
    return d == pureBlack_ColorTheme || d == dark_ColorTheme;
}
iLocalDef iBool isLight_ColorTheme(enum iColorTheme d) {
    return !isDark_ColorTheme(d);
}

enum iColorId {
    none_ColorId = -1,

    black_ColorId,
    gray25_ColorId,
    gray50_ColorId,
    gray75_ColorId,
    white_ColorId,
    brown_ColorId,    
    orange_ColorId,
    teal_ColorId,
    cyan_ColorId,
    yellow_ColorId,
    red_ColorId,
    magenta_ColorId,
    blue_ColorId,
    green_ColorId,

    /* user interface colors for semantic use */
    uiFirst_ColorId,
    uiBackground_ColorId = uiFirst_ColorId,
    uiBackgroundHover_ColorId,
    uiBackgroundPressed_ColorId,
    uiBackgroundSelected_ColorId,
    uiBackgroundFramelessHover_ColorId,
    uiText_ColorId,
    uiTextPressed_ColorId,
    uiTextSelected_ColorId,
    uiTextFramelessHover_ColorId,
    uiTextFramelessSelected_ColorId,
    uiTextStrong_ColorId,
    uiTextShortcut_ColorId,
    uiTextAction_ColorId,
    uiTextCaution_ColorId,
    uiFrame_ColorId,
    uiEmboss1_ColorId,
    uiEmboss2_ColorId,
    uiEmbossHover1_ColorId,
    uiEmbossHover2_ColorId,
    uiEmbossPressed1_ColorId,
    uiEmbossPressed2_ColorId,
    uiEmbossSelected1_ColorId,
    uiEmbossSelected2_ColorId,
    uiEmbossSelectedHover1_ColorId,
    uiEmbossSelectedHover2_ColorId,
    uiInputBackground_ColorId,
    uiInputBackgroundFocused_ColorId,
    uiInputText_ColorId,
    uiInputTextFocused_ColorId,
    uiInputFrame_ColorId,
    uiInputFrameHover_ColorId,
    uiInputFrameFocused_ColorId,
    uiInputCursor_ColorId,
    uiInputCursorText_ColorId,
    uiHeading_ColorId,
    uiIcon_ColorId,
    uiIconHover_ColorId,
    uiSeparator_ColorId,
    uiMarked_ColorId,
    uiMatching_ColorId,

    /* content theme colors */
    tmFirst_ColorId,
    tmBackground_ColorId = tmFirst_ColorId,
    tmParagraph_ColorId,
    tmFirstParagraph_ColorId,
    tmQuote_ColorId,
    tmPreformatted_ColorId,
    tmHeading1_ColorId,
    tmHeading2_ColorId,
    tmHeading3_ColorId,
    tmBannerBackground_ColorId,
    tmBannerTitle_ColorId,
    tmBannerIcon_ColorId,
    tmInlineContentMetadata_ColorId,
    tmBadLink_ColorId,

    tmLinkIcon_ColorId,
    tmLinkIconVisited_ColorId,
    tmLinkText_ColorId,
    tmLinkTextHover_ColorId,
    tmLinkDomain_ColorId,
    tmLinkLastVisitDate_ColorId,

    tmHypertextLinkIcon_ColorId,
    tmHypertextLinkIconVisited_ColorId,
    tmHypertextLinkText_ColorId,
    tmHypertextLinkTextHover_ColorId,
    tmHypertextLinkDomain_ColorId,
    tmHypertextLinkLastVisitDate_ColorId,

    tmGopherLinkIcon_ColorId,
    tmGopherLinkIconVisited_ColorId,
    tmGopherLinkText_ColorId,
    tmGopherLinkTextHover_ColorId,
    tmGopherLinkDomain_ColorId,
    tmGopherLinkLastVisitDate_ColorId,

    max_ColorId
};

iLocalDef iBool isLink_ColorId(enum iColorId d) {
    return d >= tmBadLink_ColorId;
}
iLocalDef iBool isBackground_ColorId(enum iColorId d) {
    return d == tmBackground_ColorId || d == tmBannerBackground_ColorId;
}
iLocalDef iBool isText_ColorId(enum iColorId d) {
    return d >= tmFirst_ColorId && !isBackground_ColorId(d);
}
iLocalDef iBool isLinkText_ColorId(enum iColorId d) {
    return d == tmLinkText_ColorId || d == tmHypertextLinkText_ColorId ||
           d == tmGopherLinkText_ColorId;
}
iLocalDef iBool isRegularText_ColorId(enum iColorId d) {
    return isLinkText_ColorId(d) || d == tmParagraph_ColorId || d == tmFirstParagraph_ColorId;
}

#define mask_ColorId                0x7f
#define permanent_ColorId           0x80 /* cannot be changed via escapes */

#define black_ColorEscape           "\r0"
#define gray25_ColorEscape          "\r1"
#define gray50_ColorEscape          "\r2"
#define gray75_ColorEscape          "\r3"
#define white_ColorEscape           "\r4"
#define brown_ColorEscape           "\r5"
#define orange_ColorEscape          "\r6"
#define teal_ColorEscape            "\r7"
#define cyan_ColorEscape            "\r8"
#define yellow_ColorEscape          "\r9"
#define red_ColorEscape             "\r:"
#define magenta_ColorEscape         "\r;"
#define blue_ColorEscape            "\r<"
#define green_ColorEscape           "\r="
#define uiText_ColorEscape          "\rC"
#define uiTextAction_ColorEscape    "\rJ"
#define uiTextCaution_ColorEscape   "\rK"
#define uiHeading_ColorEscape       "\r`"

iDeclareType(Color)
iDeclareType(HSLColor)

struct Impl_Color {
    uint8_t r, g, b, a;
};

struct Impl_HSLColor {
    float hue, sat, lum, a;
};

iHSLColor       hsl_Color       (iColor);
iColor          rgb_HSLColor    (iHSLColor);

iHSLColor       setSat_HSLColor     (iHSLColor, float sat);
iHSLColor       setLum_HSLColor     (iHSLColor, float lum);
iHSLColor       addSatLum_HSLColor  (iHSLColor, float sat, float lum);

iColor          get_Color       (int color);
int             darker_Color    (int color);
int             lighter_Color   (int color);
void            set_Color       (int color, iColor rgba);

iLocalDef void setHsl_Color(int color, iHSLColor hsl) {
    set_Color(color, rgb_HSLColor(hsl));
}

void            setThemePalette_Color   (enum iColorTheme theme);

iColor          ansi_Color      (iRangecc escapeSequence, int fallback);
const char *    escape_Color    (int color);