#!/usr/bin/env bash
set -u
SCRIPT_DIR="$(cd "$(dirname "$0")/.." && pwd)"
source "$SCRIPT_DIR/lib/common.sh"

FAILURES=0
assert_eq() {
    local expected="$1" actual="$2" name="$3"
    if [ "$expected" = "$actual" ]; then
        echo "PASS: $name"
    else
        echo "FAIL: $name (expected '$expected', got '$actual')"
        FAILURES=$((FAILURES + 1))
    fi
}

# Setup: temp consumer settings + brain fragment
tmpdir=$(mktemp -d)
cp "$SCRIPT_DIR/fixtures/sample-settings.json" "$tmpdir/settings.json"
cat > "$tmpdir/fragment.json" <<EOF2
{
  "enabledPlugins": {
    "new-plugin@new-mp": true
  },
  "permissions": {
    "allow": ["Bash(new:*)"],
    "deny": ["Bash(rm:*)"],
    "ask": []
  },
  "hooks": {
    "SessionStart": [{"hooks": [{"type": "command", "command": "echo new"}]}]
  }
}
EOF2

# Run merge
bash "$SCRIPT_DIR/lib/merge-settings.sh" "$tmpdir/settings.json" "$tmpdir/fragment.json"

# Test 1: theme preserved
theme=$(jq -r '.theme' "$tmpdir/settings.json")
assert_eq "dark" "$theme" "theme preserved"

# Test 2: editorMode preserved
em=$(jq -r '.editorMode' "$tmpdir/settings.json")
assert_eq "vscode" "$em" "editorMode preserved"

# Test 3: enabledPlugins replaced (not merged)
plugins=$(jq -r '.enabledPlugins | keys[]' "$tmpdir/settings.json")
assert_eq "new-plugin@new-mp" "$plugins" "enabledPlugins replaced with brain version"

# Test 4: permissions.deny populated from fragment
deny=$(jq -r '.permissions.deny[0]' "$tmpdir/settings.json")
assert_eq "Bash(rm:*)" "$deny" "permissions.deny from fragment"

# Test 5: hooks replaced
hook_cmd=$(jq -r '.hooks.SessionStart[0].hooks[0].command' "$tmpdir/settings.json")
assert_eq "echo new" "$hook_cmd" "hooks replaced with brain version"

# Cleanup
rm -rf "$tmpdir"

echo "---"
echo "Failures: $FAILURES"
exit $FAILURES