/*** NATIVE ------------------------------------------- ***/

import { mkdir, writeFile } from "node:fs/promises";

/*** UTILITY ------------------------------------------ ***/

import { palette, raw, yang, yin } from "../src/colors";
import { reduced } from "../src/index";

const buildScss = (): string => {
  const lines: string[] = ["// Generated from src/colors.ts — do not edit by hand", ""];

  for (const hue of Object.keys(palette).sort()) {
    const shades = palette[hue as keyof typeof palette];

    for (const shade of Object.keys(shades).sort()) {
      const value = shades[Number(shade) as 1];
      lines.push(`$uchu-${hue}-${shade}-raw: ${raw[hue][shade]};`);
      lines.push(`$uchu-${hue}-${shade}: ${value};`);
    }

    lines.push("");
  }

  lines.push(`$uchu-yang: ${yang};`);
  lines.push(`$uchu-yin: ${yin};`);
  lines.push("");
  lines.push(":root {");

  for (const hue of Object.keys(palette).sort()) {
    const shades = palette[hue as keyof typeof palette];

    for (const shade of Object.keys(shades).sort()) {
      lines.push(`  --uchu-${hue}-${shade}-raw: #{$uchu-${hue}-${shade}-raw};`);
      lines.push(`  --uchu-${hue}-${shade}: #{$uchu-${hue}-${shade}};`);
    }
  }

  lines.push(`  --uchu-yang: #{$uchu-yang};`);
  lines.push(`  --uchu-yin: #{$uchu-yin};`);
  lines.push("}", "");

  return lines.join("\n");
};

const buildCss = (): string => {
  const lines: string[] = ["/* Generated from src/colors.ts — do not edit by hand */", "", ":root {"];

  for (const hue of Object.keys(palette).sort()) {
    const shades = palette[hue as keyof typeof palette];

    for (const shade of Object.keys(shades).sort()) {
      const value = shades[Number(shade) as 1];
      lines.push(`  --uchu-${hue}-${shade}-raw: ${raw[hue][shade]};`);
      lines.push(`  --uchu-${hue}-${shade}: ${value};`);
    }
  }

  lines.push(`  --uchu-yang: ${yang};`);
  lines.push(`  --uchu-yin: ${yin};`);
  lines.push("}", "");

  return lines.join("\n");
};

const buildCssReduced = (): string => {
  const lines: string[] = ["/* Generated from src/index.ts — do not edit by hand */", "", ":root {"];

  for (const hue of Object.keys(reduced).sort()) {
    const shades = reduced[hue as keyof typeof reduced];

    for (const shade of Object.keys(shades).sort()) {
      const value = shades[Number(shade) as 1];

      switch(Number(shade)) {
        case 1: {
          lines.push(`  --uchu-light-${hue}-raw: ${raw[hue][shade]};`);
          lines.push(`  --uchu-light-${hue}: ${value};`);
          break;
        }

        case 2: {
          lines.push(`  --uchu-${hue}-raw: ${raw[hue][shade]};`);
          lines.push(`  --uchu-${hue}: ${value};`);
          break;
        }

        case 3: {
          lines.push(`  --uchu-dark-${hue}-raw: ${raw[hue][shade]};`);
          lines.push(`  --uchu-dark-${hue}: ${value};`);
          break;
        }
      }
    }
  }

  lines.push(`  --uchu-yang: ${yang};`);
  lines.push(`  --uchu-yin: ${yin};`);
  lines.push("}", "");

  return lines.join("\n");
};

/*** RUNTIME ------------------------------------------ ***/

await mkdir("dist", { recursive: true });
await writeFile("dist/_palette.scss", buildScss());
await writeFile("dist/uchu.css", buildCss());
await writeFile("dist/uchu-reduced.css", buildCssReduced());
await writeFile("demo/asset/style/uchu.css", buildCss());
await writeFile("demo/asset/style/uchu-reduced.css", buildCssReduced());

console.log("Generated dist/_palette.scss and dist/uchu.css");