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

# Structural smoke tests for Phase 2 skills
# Verifies files exist, frontmatter is valid, and reference symlinks resolve

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

pass=0
fail=0

check() {
    local desc="$1"
    shift
    if "$@" >/dev/null 2>&1; then
        printf '  \033[32m✓\033[0m %s\n' "$desc"
        ((pass++))
    else
        printf '  \033[31m✗\033[0m %s\n' "$desc"
        ((fail++))
    fi
}

# Inverse check: passes when the command FAILS (e.g. grep finds nothing)
check_absent() {
    local desc="$1"
    shift
    if "$@" >/dev/null 2>&1; then
        printf '  \033[31m✗\033[0m %s\n' "$desc"
        ((fail++))
    else
        printf '  \033[32m✓\033[0m %s\n' "$desc"
        ((pass++))
    fi
}

for skill in elicit distill propagate; do
    echo "=== $skill ==="
    check "SKILL.md exists"                        test -f ".pi/skills/$skill/SKILL.md"
    check "frontmatter: name: $skill"              grep -q "^name: $skill" ".pi/skills/$skill/SKILL.md"
    check "frontmatter: disable-model-invocation"  grep -q "^disable-model-invocation:" ".pi/skills/$skill/SKILL.md"
    check "frontmatter: license"                   grep -q "^license:" ".pi/skills/$skill/SKILL.md"
    check "frontmatter: metadata.upstream"         grep -q "upstream:" ".pi/skills/$skill/SKILL.md"
    check "references/ directory exists"           test -d ".pi/skills/$skill/references"
done

echo "=== reference symlinks ==="
check "elicit:    language-reference.md resolves"    test -s ".pi/skills/elicit/references/language-reference.md"
check "elicit:    library-spec-signals.md resolves"  test -s ".pi/skills/elicit/references/library-spec-signals.md"
check "distill:   language-reference.md resolves"    test -s ".pi/skills/distill/references/language-reference.md"
check "distill:   worked-examples.md resolves"       test -s ".pi/skills/distill/references/worked-examples.md"
check "propagate: test-generation.md resolves"       test -s ".pi/skills/propagate/references/test-generation.md"

echo "=== cross-references in SKILL.md ==="
check "elicit:    refs use references/ prefix"       grep -q '(references/language-reference.md)' ".pi/skills/elicit/SKILL.md"
check "elicit:    sub-ref uses references/ prefix"   grep -q '(references/library-spec-signals.md)' ".pi/skills/elicit/SKILL.md"
check "distill:   refs use references/ prefix"       grep -q '(references/language-reference.md)' ".pi/skills/distill/SKILL.md"
check "distill:   sub-ref uses references/ prefix"   grep -q '(references/worked-examples.md)' ".pi/skills/distill/SKILL.md"
check "propagate: refs use references/ prefix"       grep -q 'references/test-generation.md' ".pi/skills/propagate/SKILL.md"

echo "=== invocation references ==="
check "elicit:    uses /skill:tend"       grep -q '/skill:tend' ".pi/skills/elicit/SKILL.md"
check "elicit:    uses /skill:weed"       grep -q '/skill:weed' ".pi/skills/elicit/SKILL.md"
check "distill:   uses /skill:tend"       grep -q '/skill:tend' ".pi/skills/distill/SKILL.md"
check "distill:   uses /skill:weed"       grep -q '/skill:weed' ".pi/skills/distill/SKILL.md"
check "propagate: uses /skill:distill"    grep -q '/skill:distill' ".pi/skills/propagate/SKILL.md"
check "propagate: uses /skill:elicit"     grep -q '/skill:elicit' ".pi/skills/propagate/SKILL.md"

echo "=== no upstream path leaks ==="
check_absent "elicit:    no ../../references/"    grep -q '\.\./\.\./references/' ".pi/skills/elicit/SKILL.md"
check_absent "distill:   no ../../references/"    grep -q '\.\./\.\./references/' ".pi/skills/distill/SKILL.md"
check_absent "elicit:    no \`tend\` skill"       grep -q '`tend` skill' ".pi/skills/elicit/SKILL.md"
check_absent "distill:   no \`tend\` skill"       grep -q '`tend` skill' ".pi/skills/distill/SKILL.md"

echo ""
echo "passed: $pass  failed: $fail"
[ "$fail" -eq 0 ]