#!/usr/bin/env python3
# description: Save a memory as a denote-formatted flat file
# Args: <title> <tags_csv> <body>

import sys
import os
import re
from datetime import datetime

if len(sys.argv) < 4:
    print("usage: memory_remember <title> <tags_csv> <body>")
    sys.exit(1)

title    = sys.argv[1]
tags_csv = sys.argv[2]
body     = sys.argv[3]

mem_dir = os.environ.get("OLLIE_MEMORY_PATH", os.path.expanduser("~/.config/ollie/memory"))

if not os.path.isdir(mem_dir):
    os.makedirs(mem_dir, exist_ok=True)

now   = datetime.now()
ident = now.strftime("%Y%m%dT%H%M%S")
date  = now.strftime("%Y-%m-%d %a %H:%M")

tags = [t.strip() for t in tags_csv.split(",") if t.strip()]

def slugify(s):
    s = s.lower()
    s = re.sub(r"[^a-z0-9]+", "-", s)
    return s.strip("-")

slug     = slugify(title)
tag_slug = "-".join(slugify(t) for t in tags)
filename = f"{ident}__{slug}--{tag_slug}.md" if tag_slug else f"{ident}__{slug}.md"
path     = os.path.join(mem_dir, filename)

tags_yaml = "[" + ", ".join(f'"{t}"' for t in tags) + "]"

content = f"""---
title:      {title}
date:       {date}
tags:       {tags_yaml}
identifier: {ident}
signature:
---

{body}
"""

try:
    with open(path, "w") as f:
        f.write(content)
except OSError as e:
    print(f"error: failed to write {path}: {e}")
    sys.exit(1)

print(f"saved: {filename}")