#!/usr/bin/env bats
# tests/kb-lint.bats — black-box tests for scripts/kb-lint.sh
#
# Contract: exit 0 when a knowledge bundle is OKF v0.1 conformant;
# one line per violation otherwise. Observable surface: stdout lines
# and exit status only.

setup() {
  LINT="$BATS_TEST_DIRNAME/../scripts/kb-lint.sh"
  KB="$(mktemp -d)/kb"
  mkdir -p "$KB/sub"
  cat > "$KB/index.md" <<'EOF'
# Index

* [Good](good.md) — fine.
EOF
  cat > "$KB/good.md" <<'EOF'
---
type: reference
title: Good
---
Body.
EOF
}

teardown() { rm -rf "$(dirname "$KB")"; }

@test "conformant bundle passes" {
  run bash "$LINT" "$KB"
  [ "$status" -eq 0 ]
}

@test "missing frontmatter is reported" {
  printf 'no frontmatter here\n' > "$KB/bad.md"
  run bash "$LINT" "$KB"
  [ "$status" -ne 0 ]
  [[ "$output" == *"bad.md: missing frontmatter"* ]]
}

@test "frontmatter without type is reported" {
  printf -- '---\ntitle: x\n---\nbody\n' > "$KB/notype.md"
  run bash "$LINT" "$KB"
  [ "$status" -ne 0 ]
  [[ "$output" == *"notype.md"*"type"* ]]
}

@test "unclosed frontmatter is reported, not silently passed" {
  # regression: a `---` in the body (fenced code, rule) must not be
  # accepted as the closing delimiter of the frontmatter block
  cat > "$KB/unclosed.md" <<'EOF'
---
type: reference
title: Unclosed

# Heading after a forgotten closing fence

```markdown
---
name: example
---
```
EOF
  run bash "$LINT" "$KB"
  [ "$status" -ne 0 ]
  [[ "$output" == *"unclosed.md"* ]]
}

@test "frontmatter in index.md is reported" {
  printf -- '---\ntype: x\n---\n# I\n' > "$KB/sub/index.md"
  run bash "$LINT" "$KB"
  [ "$status" -ne 0 ]
  [[ "$output" == *"index.md must not have frontmatter"* ]]
}

@test "broken relative link is reported" {
  printf -- '---\ntype: reference\n---\nsee [x](gone.md)\n' > "$KB/links.md"
  run bash "$LINT" "$KB"
  [ "$status" -ne 0 ]
  [[ "$output" == *"links.md: broken relative link"* ]]
}

@test "broken wikilink is reported" {
  printf -- '---\ntype: reference\n---\nsee [[nowhere]]\n' > "$KB/wiki.md"
  run bash "$LINT" "$KB"
  [ "$status" -ne 0 ]
  [[ "$output" == *"wiki.md: broken wikilink"* ]]
}

@test "missing kb directory exits 2" {
  run bash "$LINT" "$KB/no-such-dir"
  [ "$status" -eq 2 ]
}

@test "a second work log in a subdirectory is reported" {
  # One bundle, one work log. Per-directory logs are how a bundle ends up with fifty
  # of them: the entry is never where the next agent looks, and each copy re-dates the
  # same event on its own.
  printf -- '---\ntype: changelog\n---\n## 2026-01-01\n- created a log\n' > "$KB/log.md"
  printf -- '---\ntype: changelog\n---\n## 2026-01-02\n- also a log\n' > "$KB/sub/log.md"
  run bash "$LINT" "$KB"
  [ "$status" -ne 0 ]
  [[ "$output" == *"one work log"*"at the bundle root"* ]]
  [[ "$output" == *"sub/log.md"* ]]
}

@test "a work log that is not at the bundle root is reported" {
  printf -- '---\ntype: changelog\n---\n## 2026-01-02\n- misplaced log\n' > "$KB/sub/log.md"
  run bash "$LINT" "$KB"
  [ "$status" -ne 0 ]
  [[ "$output" == *"one work log"*"at the bundle root"* ]]
}

@test "the quarantine trash directory is not part of the bundle" {
  # Deleted pages wait in .AGENTTRASH/ for a pruning session with Frank. Holding them
  # to frontmatter and one-log rules would push an agent to delete history to go green.
  mkdir -p "$KB/.AGENTTRASH"
  printf 'no frontmatter, and a second log besides\n' > "$KB/.AGENTTRASH/log.md"
  run bash "$LINT" "$KB"
  [ "$status" -eq 0 ]
  [[ "$output" == *"0 violation(s)"* ]]
}

@test "a wikilink must not resolve into the quarantine" {
  # Obsidian resolves [[name]] by filename anywhere under the vault, and the resolver copied
  # that with a raw rglob — so [[log]] stayed "valid" by landing on the copy waiting in
  # .AGENTTRASH/. That is #57's failure wearing a green check: the page is out of circulation
  # until a pruning session with Frank, and it is not even tracked, so on another machine the
  # link points at nothing while the gate here says it is fine.
  mkdir -p "$KB/.AGENTTRASH"
  printf 'no frontmatter, quarantined\n' > "$KB/.AGENTTRASH/log.md"
  printf -- '---\ntype: reference\n---\nSee [[log]] for the history.\n' > "$KB/good.md"
  run bash "$LINT" "$KB"
  [ "$status" -ne 0 ]
  [[ "$output" == *"broken wikilink -> [[log]]"* ]]
}

@test "a markdown link into the quarantine is broken" {
  # #57's failure mode wearing markdown instead of brackets: the relative-link check was a
  # bare is_file(), so a link that lands on a page waiting in .AGENTTRASH/ passes this gate
  # and points at nothing on every machine that pulls — the quarantine is gitignored. Both
  # spellings count: relative, and bundle-absolute with a leading slash.
  mkdir -p "$KB/.AGENTTRASH"
  printf 'no frontmatter, quarantined\n' > "$KB/.AGENTTRASH/gone.md"
  printf -- '---\ntype: reference\n---\nRelative: [gone](.AGENTTRASH/gone.md)\n' > "$KB/rel.md"
  printf -- '---\ntype: reference\n---\nAbsolute: [gone](/.AGENTTRASH/gone.md)\n' > "$KB/abs.md"
  run bash "$LINT" "$KB"
  [ "$status" -ne 0 ]
  [[ "$output" == *"rel.md: broken relative link -> .AGENTTRASH/gone.md"* ]]
  [[ "$output" == *"abs.md: broken relative link -> /.AGENTTRASH/gone.md"* ]]
}

@test "a wikilink to a live page still resolves, in any directory" {
  # The narrowing above must cost nothing: filename-anywhere semantics is the point.
  printf -- '---\ntype: reference\n---\nSee [[good]].\n' > "$KB/sub/other.md"
  run bash "$LINT" "$KB"
  [ "$status" -eq 0 ]
  [[ "$output" == *"0 violation(s)"* ]]
}

@test "the shipped knowledge base itself is conformant" {
  # The tests above exercise the linter against fixtures; nothing else in the
  # suite ever points it at the real bundle, so a page added without frontmatter
  # or an index that stops listing a file passes CI silently. This is the gate.
  run bash "$BATS_TEST_DIRNAME/../scripts/kb-lint.sh" "$BATS_TEST_DIRNAME/../omp-docs"
  [ "$status" -eq 0 ]
  [[ "$output" == *"0 violation(s)"* ]]
}

@test "every page in the shipped knowledge base is listed by an index" {
  run python3 "$BATS_TEST_DIRNAME/../scripts/kb-coverage.py" "$BATS_TEST_DIRNAME/../omp-docs"
  [ "$status" -eq 0 ]
  [[ "$output" == *"0 issue(s)"* ]]
}