dr5hn
diff --git a/‎bin/scripts/sync/import_tunisia_postcodes.py‎
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+#!/usr/bin/env python3
+"""Tunisia -> contributions/postcodes/TN.json importer for issue #1039.
+
+Source data
+-----------
+The community ``JenhaniChedli/TunisiaGeodataAPI`` repository ships
+postcodes.json — 4,868 La Poste Tunisienne 4-digit postcodes joined
+with the full Gouvernorat / Délégation / Cité (locality) hierarchy.
+
+    [{"Gov": "Ariana", "Deleg": "Sidi Thabet",
+      "Cite": "Cite Dridi", "zip": "2032"}, ...]
+
+Source URL: https://raw.githubusercontent.com/JenhaniChedli/TunisiaGeodataAPI/master/postcodes.json
+
+What this script does
+---------------------
+1. Fetches the JSON via urllib (curl is blocked).
+2. Resolves state FK via ASCII-fold + name match against CSC's 24
+   gouvernorat entries, with one alias for the source's
+   'Mannouba' -> CSC 'Manouba' single-letter spelling drift.
+3. Emits one row per (zip, Cite, Deleg) tuple.
+4. Writes contributions/postcodes/TN.json idempotently.
+
+Coverage upgrade
+----------------
+The previously-tracked ``hajer77/postCodeTunisia-api`` source ships
+only ~9 records covering 8 of 24 governorates. This source has
+**all 24 governorates** with 4,868 localities — confirmed via direct
+inspection. The research doc Tier B note for Tunisia
+(`Stub only (8/24)`) is now stale and superseded.
+
+License & attribution
+---------------------
+- Source: JenhaniChedli/TunisiaGeodataAPI (no formal LICENSE file)
+- Upstream: La Poste Tunisienne publicly published codes
+- Each row: ``source: "la-poste-tunisienne-via-jenhani-chedli"``
+
+Tier 5 per #1039 license-tier policy.
+
+Usage
+-----
+    python3 bin/scripts/sync/import_tunisia_postcodes.py
+"""
+
+from __future__ import annotations
+
+import argparse
+import json
+import re
+import sys
+import unicodedata
+import urllib.request
+from pathlib import Path
+from typing import Dict, List
+
+
+SOURCE_URL = (
+    "https://raw.githubusercontent.com/JenhaniChedli/TunisiaGeodataAPI/"
+    "master/postcodes.json"
+)
+
+# Source -> CSC name. Only entries where direct ASCII-fold match fails.
+GOV_ALIASES: Dict[str, str] = {
+    "Mannouba": "Manouba",  # source spells with double 'n'
+}
+
+
+def _ascii_fold(value: str) -> str:
+    return (
+        "".join(
+            c
+            for c in unicodedata.normalize("NFKD", value)
+            if not unicodedata.combining(c)
+        )
+        .strip()
+        .lower()
+    )
+
+
+def fetch_json(url: str) -> List[dict]:
+    req = urllib.request.Request(
+        url, headers={"User-Agent": "csc-database-postcode-importer"}
+    )
+    with urllib.request.urlopen(req, timeout=60) as r:
+        return json.loads(r.read())
+
+
+def main() -> int:
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument("--input", default=None, help="local JSON (skip fetch)")
+    parser.add_argument("--dry-run", action="store_true")
+    args = parser.parse_args()
+
+    rows = (
+        json.loads(Path(args.input).read_text(encoding="utf-8"))
+        if args.input
+        else fetch_json(SOURCE_URL)
+    )
+    print(f"Source rows: {len(rows):,}")
+
+    project_root = Path(__file__).resolve().parents[3]
+    countries = json.load(
+        (project_root / "contributions/countries/countries.json").open(encoding="utf-8")
+    )
+    tn_country = next((c for c in countries if c.get("iso2") == "TN"), None)
+    if tn_country is None:
+        print("ERROR: TN not in countries.json", file=sys.stderr)
+        return 2
+    regex = re.compile(tn_country.get("postal_code_regex") or ".*")
+
+    states = json.load(
+        (project_root / "contributions/states/states.json").open(encoding="utf-8")
+    )
+    tn_states = [s for s in states if s.get("country_id") == tn_country["id"]]
+    state_by_fold: Dict[str, dict] = {
+        _ascii_fold(s["name"]): s for s in tn_states if s.get("name")
+    }
+    print(
+        f"Country: Tunisia (id={tn_country['id']}); states indexed: {len(tn_states)}"
+    )
+
+    seen: set = set()
+    records: List[dict] = []
+    skipped_no_code = 0
+    skipped_bad_regex = 0
+    skipped_no_state = 0
+    matched_state = 0
+    unknown_govs: Dict[str, int] = {}
+
+    for row in rows:
+        raw_code = (row.get("zip") or "").strip()
+        if not raw_code:
+            skipped_no_code += 1
+            continue
+        code = raw_code.zfill(4) if raw_code.isdigit() else raw_code
+        if not regex.match(code):
+            skipped_bad_regex += 1
+            continue
+
+        gov_raw = (row.get("Gov") or "").strip()
+        gov_alias = GOV_ALIASES.get(gov_raw, gov_raw)
+        state = state_by_fold.get(_ascii_fold(gov_alias))
+        if state is None:
+            unknown_govs[gov_raw] = unknown_govs.get(gov_raw, 0) + 1
+            skipped_no_state += 1
+
+        cite = (row.get("Cite") or "").strip()
+        deleg = (row.get("Deleg") or "").strip()
+        if cite and deleg and cite.lower() != deleg.lower():
+            locality = f"{cite}, {deleg}"
+        else:
+            locality = cite or deleg
+
+        key = (code, locality.lower())
+        if key in seen:
+            continue
+        seen.add(key)
+
+        record: Dict[str, object] = {
+            "code": code,
+            "country_id": int(tn_country["id"]),
+            "country_code": "TN",
+        }
+        if state is not None:
+            record["state_id"] = int(state["id"])
+            record["state_code"] = state.get("iso2")
+            matched_state += 1
+        if locality:
+            record["locality_name"] = locality
+        record["type"] = "full"
+        record["source"] = "la-poste-tunisienne-via-jenhani-chedli"
+        records.append(record)
+
+    print(f"Skipped (no code):     {skipped_no_code:,}")
+    print(f"Skipped (regex fail):  {skipped_bad_regex:,}")
+    print(f"Skipped (no state FK): {skipped_no_state:,}")
+    print(f"Records emitted:       {len(records):,}")
+    pct = matched_state * 100 // max(1, len(records))
+    print(f"  with state:          {matched_state:,} ({pct}%)")
+    if unknown_govs:
+        print("Unknown governorates (not in CSC + GOV_ALIASES):")
+        for g, n in sorted(unknown_govs.items(), key=lambda x: -x[1]):
+            print(f"  {g!r}: {n}")
+
+    if args.dry_run:
+        return 0
+
+    target = project_root / "contributions/postcodes/TN.json"
+    target.parent.mkdir(parents=True, exist_ok=True)
+    if target.exists():
+        with target.open(encoding="utf-8") as f:
+            existing = json.load(f)
+        existing_seen = {
+            (r["code"], (r.get("locality_name") or "").lower()) for r in existing
+        }
+        merged = list(existing)
+        for r in records:
+            key = (r["code"], (r.get("locality_name") or "").lower())
+            if key not in existing_seen:
+                merged.append(r)
+                existing_seen.add(key)
+        merged.sort(key=lambda r: (r["code"], r.get("locality_name", "")))
+    else:
+        merged = sorted(records, key=lambda r: (r["code"], r.get("locality_name", "")))
+
+    with target.open("w", encoding="utf-8") as f:
+        json.dump(merged, f, ensure_ascii=False, indent=2)
+        f.write("\n")
+    size_kb = target.stat().st_size / 1024
+    print(
+        f"\n[OK] Wrote {target.relative_to(project_root)} "
+        f"({len(merged):,} rows, {size_kb:.0f} KB)"
+    )
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())