#!/usr/bin/env bash
set -euo pipefail

cd "$(dirname "$0")/.."

git diff --check
generator_diff_before="$(mktemp)"
generator_diff_after="$(mktemp)"
trap 'rm -f "$generator_diff_before" "$generator_diff_after"' EXIT
git diff --binary -- website/content/pages/docs/commands skill-data SKILL.md skills > "$generator_diff_before"
python3 scripts/generate-agent-docs.py
git diff --binary -- website/content/pages/docs/commands skill-data SKILL.md skills > "$generator_diff_after"
if ! cmp -s "$generator_diff_before" "$generator_diff_after"; then
  printf 'Generated command docs/skills are out of date. Run scripts/generate-agent-docs.py and commit the result.\n' >&2
  git diff --stat -- website/content/pages/docs/commands skill-data SKILL.md skills >&2
  exit 1
fi
npm --prefix website run check
npm --prefix website run build

if [[ -f website/public/install.sh ]]; then
  bash -n website/public/install.sh
fi

validate_skill_file() {
  local skill_file="$1"
  [[ -f "$skill_file" ]] || {
    printf 'Missing installable skill file %s\n' "$skill_file" >&2
    return 1
  }

  python3 - "$skill_file" <<'PY'
from pathlib import Path
import re
import sys

path = Path(sys.argv[1])
text = path.read_text(encoding="utf-8")
if not text.startswith("---\n"):
    raise SystemExit(f"{path}: missing YAML frontmatter")
try:
    _, frontmatter, body = text.split("---", 2)
except ValueError:
    raise SystemExit(f"{path}: malformed YAML frontmatter")
for field in ("name", "description"):
    if not re.search(rf"(?m)^{field}:\s*\S", frontmatter):
        raise SystemExit(f"{path}: missing frontmatter field {field}")
description = re.search(r'(?m)^description:\s*(.+)$', frontmatter).group(1)
if not (description.startswith('"') and description.endswith('"')):
    raise SystemExit(f"{path}: description must be quoted YAML")
if not re.search(r"(?m)^#\s+\S", body):
    raise SystemExit(f"{path}: missing markdown heading")
PY
}

validate_flat_skill_files() {
  local root="$1"
  [[ -d "$root" ]] || return 0

  local nested_skill_files
  nested_skill_files=$(find "$root" -mindepth 2 -name SKILL.md -print | sort)
  if [[ -n "$nested_skill_files" ]]; then
    printf 'Runtime skill data must be flat command-named markdown files, not installable SKILL.md trees:\n%s\n' "$nested_skill_files" >&2
    return 1
  fi

  local found=0
  while IFS= read -r -d '' skill_file; do
    found=1
    python3 - "$skill_file" <<'PY'
from pathlib import Path
import re
import sys

path = Path(sys.argv[1])
text = path.read_text(encoding="utf-8")
if path.name == "SKILL.md" or path.suffix != ".md" or path.parent.name != "skill-data":
    raise SystemExit(f"{path}: skill-data entries must be flat <skill-name>.md files")
if not text.startswith("---\n"):
    raise SystemExit(f"{path}: missing YAML frontmatter")
try:
    _, frontmatter, body = text.split("---", 2)
except ValueError:
    raise SystemExit(f"{path}: malformed YAML frontmatter")
name_match = re.search(r"(?m)^name:\s*(\S+)", frontmatter)
if not name_match:
    raise SystemExit(f"{path}: missing frontmatter field name")
if path.stem != name_match.group(1):
    raise SystemExit(f"{path}: filename must match skill name {name_match.group(1)}")
if not re.search(r"(?m)^description:\s*\S", frontmatter):
    raise SystemExit(f"{path}: missing frontmatter field description")
description = re.search(r'(?m)^description:\s*(.+)$', frontmatter).group(1)
if not (description.startswith('"') and description.endswith('"')):
    raise SystemExit(f"{path}: description must be quoted YAML")
if not re.search(r"(?m)^#\s+\S", body):
    raise SystemExit(f"{path}: missing markdown heading")
PY
  done < <(find "$root" -mindepth 1 -maxdepth 1 -type f -name '*.md' -print0 | sort -z)

  if [[ "$found" -eq 0 ]]; then
    printf 'No flat markdown skill files found under %s\n' "$root" >&2
    return 1
  fi
}

validate_flat_skill_files skill-data
validate_skill_file SKILL.md

if [[ -d skills ]]; then
  printf 'Installable static skill must live at repository root SKILL.md for npx skills add telegraphic-dev/jbx; command skills must be served by the jbx binary, not exposed as static SKILL.md trees. Remove skills/.\n' >&2
  exit 1
fi