#!/usr/bin/env python3
"""
extract_for_dev.py
──────────────────
Extracts all embedded source files from Avaya_5952_setup.py
into individual files for development with Claude Code or any editor.

Run once to bootstrap the repo:
    python extract_for_dev.py

After editing source files, re-embed for distribution:
    python embed_for_dist.py   (see that script)

The single-file Avaya_5952_setup.py is for end-user distribution.
These extracted files are the development source of truth.
"""

import re, sys
from pathlib import Path

HERE  = Path(__file__).parent
SETUP = HERE / "Avaya_5952_setup.py"

if not SETUP.exists():
    print(f"Error: {SETUP} not found")
    sys.exit(1)

src = SETUP.read_text()

# ── Extract repr()-encoded string constants ─────────────────────────────────

def extract_repr(src, name):
    idx = src.find(f'\n{name} = ')
    if idx == -1:
        return None
    start = idx + len(f'\n{name} = ')
    qc = src[start]
    end = start + 1
    while end < len(src):
        if src[end] == qc and src[end-1] != '\\':
            end += 1; break
        end += 1
    try:
        return eval(src[start:end])
    except Exception as e:
        print(f"  Warning: could not extract {name}: {e}")
        return None

# ── Extract triple-quoted string constants ───────────────────────────────────

def extract_triple(src, name):
    pattern = rf'{name}\s*=\s*"""(.*?)"""'
    m = re.search(pattern, src, re.DOTALL)
    return m.group(1) if m else None

# ── Files to extract ─────────────────────────────────────────────────────────

print("Extracting source files from Avaya_5952_setup.py...\n")

extractions = [
    # (extract_fn, constant_name, output_filename, note)
    (extract_repr,   'BACKEND_SRC',       'switch_backend.py',      "FastAPI backend"),
    (extract_repr,   'JSX_SRC',           'ers5952-manager.jsx',    "React frontend"),
    (extract_repr,   'README_SRC',        'README.md',              "Documentation"),
    (extract_triple, 'DOCKERFILE',        'Dockerfile',             "Docker image"),
    (extract_triple, 'COMPOSE_YML',       'docker-compose.yml',     "Docker Compose"),
    (extract_triple, 'CADDYFILE_TEMPLATE','Caddyfile.template',     "Caddy config template"),
]

written = []
for fn, const, fname, note in extractions:
    content = fn(src, const)
    if content:
        out = HERE / fname
        if out.exists():
            overwrite = input(f"  {fname} already exists — overwrite? [y/N] ").strip().lower()
            if overwrite != 'y':
                print(f"  skipped {fname}")
                continue
        out.write_text(content)
        written.append(fname)
        print(f"  ✓ {fname:<35} {note}  ({len(content):,} chars)")
    else:
        print(f"  ✗ {fname:<35} not found in setup script")

print(f"\n{len(written)} files extracted.")
print("""
Next steps:
  1. git init && git add . && git commit -m "initial: extracted from single-file setup"
  2. Push to GitHub (check no credentials in source first)
  3. Open with Claude Code: claude
  4. Say: "Read HANDOFF.md — continue building the switch manager"

To re-embed source files back into Avaya_5952_setup.py for distribution:
  python embed_for_dist.py
""")