refactor core python package, implement base CLI

monobiome/palette.py

@@ -0,0 +1,54 @@
+import json
+from functools import cache
+from importlib.metadata import version
+
+from coloraide import Color
+
+from monobiome.constants import (
+    h_map,
+    L_points,
+    Lpoints_Cstar_Hmap,
+)
+
+
+@cache
+def compute_hlc_map(notation: str) -> dict[str, dict[int, str]]:
+    hlc_map = {}
+
+    for h_str, Lpoints_Cstar in Lpoints_Cstar_Hmap.items():
+        _h = h_map[h_str]
+        hlc_map[h_str] = {}
+        
+        for _l, _c in zip(L_points, Lpoints_Cstar, strict=True):
+            oklch = Color('oklch', [_l/100, _c, _h])
+
+            if notation == "hex":
+                srgb = oklch.convert('srgb')
+                c_str = srgb.to_string(hex=True)
+            elif notation == "oklch":
+                ol, oc, oh = oklch.convert('oklch').coords()
+                c_str = f"oklch({ol*100:.1f}% {oc:.4f} {oh:.1f})"
+            
+            hlc_map[h_str][_l] = c_str
+
+    return hlc_map
+
+def generate_palette(
+    notation: str,
+    file_format: str,
+) -> str:
+    mb_version = version("monobiome")
+    hlc_map = compute_hlc_map(notation)
+            
+    if file_format == "json":
+        hlc_map["version"] = mb_version
+        return json.dumps(hlc_map, indent=4)
+    else:
+        toml_lines = [f"version = {mb_version}", ""]
+        for _h, _lc_map in hlc_map.items():
+            toml_lines.append(f"[{_h}]")
+            for _l, _c in _lc_map.items():
+                toml_lines.append(f'l{_l} = "{_c}"')
+            toml_lines.append("")
+
+        return "\n".join(toml_lines)