// The single server-side source of truth for HOW a token maps to CSS. Kept
// structurally parallel to the SPA TokenManifest. Pure data + caps; no imports.
//
//   kind:"bsvar"  -> :root { --bs-<cssVar>: <value>; }   (+ optional --bs-<x>-rgb companion)
//   kind:"rule"   -> a targeted  selector { prop: value; }  for things --bs-* can't reach
//   kind:"ignore" -> known-but-not-emitted (forward-compat)
//
// Keys are the FLATTENED, kebab-case token names (see compile.flattenTokens,
// which camel->kebab maps the nested tokens object onto these keys).

const TOKEN_SCHEMA = {
    primary:           { kind: "bsvar", cssVar: "primary",     derive: ["primary-rgb"] },
    secondary:         { kind: "bsvar", cssVar: "secondary",   derive: ["secondary-rgb"] },
    success:           { kind: "bsvar", cssVar: "success",     derive: ["success-rgb"] },
    info:              { kind: "bsvar", cssVar: "info",        derive: ["info-rgb"] },
    warning:           { kind: "bsvar", cssVar: "warning",     derive: ["warning-rgb"] },
    danger:            { kind: "bsvar", cssVar: "danger",      derive: ["danger-rgb"] },
    light:             { kind: "bsvar", cssVar: "light",       derive: ["light-rgb"] },
    dark:              { kind: "bsvar", cssVar: "dark",        derive: ["dark-rgb"] },
    "body-bg":         { kind: "bsvar", cssVar: "body-bg",     derive: ["body-bg-rgb"] },
    "body-color":      { kind: "bsvar", cssVar: "body-color",  derive: ["body-color-rgb"] },
    "font-sans-serif": { kind: "bsvar", cssVar: "font-sans-serif" },
    "font-monospace":  { kind: "bsvar", cssVar: "font-monospace" },
    "root-font-size":  { kind: "bsvar", cssVar: "root-font-size" },
    "body-font-size":  { kind: "bsvar", cssVar: "body-font-size" },
    "body-font-weight":{ kind: "bsvar", cssVar: "body-font-weight" },
    "body-line-height":{ kind: "bsvar", cssVar: "body-line-height" },
    "headings-font-family": { kind: "bsvar", cssVar: "headings-font-family" },
    "border-radius":   { kind: "bsvar", cssVar: "border-radius" },
    "border-width":    { kind: "bsvar", cssVar: "border-width" },
    "border-color":    { kind: "bsvar", cssVar: "border-color" },
    "link-color":      { kind: "bsvar", cssVar: "link-color",  derive: ["link-color-rgb"] },
    "link-hover-color":{ kind: "bsvar", cssVar: "link-hover-color" },
    "navbar-bg":       { kind: "rule", selector: ".navbar", prop: "--bs-navbar-bg" },
    "card-bg":         { kind: "rule", selector: ".card", prop: "--bs-card-bg" },
    "sidebar-bg":      { kind: "rule", selector: ".sidebar, #accordionSidebar", prop: "background-color" },
};

const TOKEN_KEY_RE = /^[-a-zA-Z0-9_]{1,64}$/;
const MAX_VALUE_LEN = 2048;
const MAX_CSS_BYTES = 512 * 1024;

module.exports = { TOKEN_SCHEMA, TOKEN_KEY_RE, MAX_VALUE_LEN, MAX_CSS_BYTES };