#!/bin/bash
# Validate the Claude Code configuration setup
# Run this after changes to ensure everything is properly configured

set -euo pipefail

CLAUDE_DIR="${HOME}/.claude"
ERRORS=0
WARNINGS=0

# Colors
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m' # No Color

pass() { echo -e "${GREEN}✓${NC} $1"; }
fail() { echo -e "${RED}✗${NC} $1"; ((ERRORS++)); }
warn() { echo -e "${YELLOW}!${NC} $1"; ((WARNINGS++)); }

echo "Validating Claude Code configuration..."
echo ""

# Check required directories
echo "=== Directory Structure ==="
for dir in agents commands hooks mcp skills state workflows automation; do
    if [[ -d "${CLAUDE_DIR}/${dir}" ]]; then
        pass "${dir}/ exists"
    else
        fail "${dir}/ missing"
    fi
done
echo ""

# Check required files
echo "=== Core Files ==="
for file in CLAUDE.md README.md settings.json .gitignore; do
    if [[ -f "${CLAUDE_DIR}/${file}" ]]; then
        pass "${file} exists"
    else
        fail "${file} missing"
    fi
done
echo ""

# Check plugin manifest
echo "=== Plugin Structure ==="
if [[ -f "${CLAUDE_DIR}/.claude-plugin/plugin.json" ]]; then
    pass "plugin.json exists"
    if python3 -c "import json; json.load(open('${CLAUDE_DIR}/.claude-plugin/plugin.json'))" 2>/dev/null; then
        pass "plugin.json is valid JSON"
    else
        fail "plugin.json is invalid JSON"
    fi
else
    warn "plugin.json missing (optional for local use)"
fi
echo ""

# Check hooks
echo "=== Hooks ==="
if [[ -f "${CLAUDE_DIR}/hooks/hooks.json" ]]; then
    pass "hooks.json exists"
    if python3 -c "import json; json.load(open('${CLAUDE_DIR}/hooks/hooks.json'))" 2>/dev/null; then
        pass "hooks.json is valid JSON"
    else
        fail "hooks.json is invalid JSON"
    fi
else
    warn "hooks.json missing"
fi

for script in session-start.sh pre-compact.sh; do
    if [[ -x "${CLAUDE_DIR}/hooks/scripts/${script}" ]]; then
        pass "hooks/scripts/${script} is executable"
    elif [[ -f "${CLAUDE_DIR}/hooks/scripts/${script}" ]]; then
        fail "hooks/scripts/${script} exists but not executable"
    fi
done
echo ""

# Check skills
echo "=== Skills ==="
for skill in gmail gcal k8s-quick-status sysadmin-health usage programmer-add-project; do
    skill_dir="${CLAUDE_DIR}/skills/${skill}"
    if [[ -f "${skill_dir}/SKILL.md" ]]; then
        pass "${skill}/SKILL.md exists"

        # Check for scripts directory
        if [[ -d "${skill_dir}/scripts" ]]; then
            script_count=$(find "${skill_dir}/scripts" -type f \( -name "*.py" -o -name "*.sh" \) | wc -l)
            if [[ ${script_count} -gt 0 ]]; then
                pass "${skill}/scripts/ has ${script_count} script(s)"

                # Check executability
                while IFS= read -r script; do
                    [[ -f "$script" ]] || continue
                    if [[ -x "$script" ]]; then
                        pass "$(basename "$script") is executable"
                    else
                        fail "$(basename "$script") not executable"
                    fi
                done < <(find "${skill_dir}/scripts" -type f \( -name "*.py" -o -name "*.sh" \) 2>/dev/null)
            fi
        fi
    else
        fail "${skill}/SKILL.md missing"
    fi
done
echo ""

# Check state files
echo "=== State Files ==="
for file in component-registry.json autonomy-levels.json model-policy.json; do
    state_file="${CLAUDE_DIR}/state/${file}"
    if [[ -f "${state_file}" ]]; then
        pass "state/${file} exists"
        if python3 -c "import json; json.load(open('${state_file}'))" 2>/dev/null; then
            pass "state/${file} is valid JSON"
        else
            fail "state/${file} is invalid JSON"
        fi
    else
        fail "state/${file} missing"
    fi
done
echo ""

# Check Gmail setup
echo "=== Gmail Integration ==="
if [[ -d "${CLAUDE_DIR}/mcp/gmail/venv" ]]; then
    pass "Gmail venv exists"
    if [[ -f "${CLAUDE_DIR}/mcp/gmail/venv/bin/python" ]]; then
        pass "Gmail venv has Python"
    else
        fail "Gmail venv missing Python"
    fi
else
    warn "Gmail venv not set up"
fi

if [[ -f "${HOME}/.gmail-mcp/credentials.json" ]]; then
    pass "Gmail credentials exist"
else
    warn "Gmail credentials missing (~/.gmail-mcp/credentials.json)"
fi
echo ""

# Check READMEs
echo "=== Documentation ==="
readme_count=0
for dir in agents commands hooks mcp skills state workflows; do
    if [[ -f "${CLAUDE_DIR}/${dir}/README.md" ]]; then
        readme_count=$((readme_count + 1))
    else
        warn "${dir}/README.md missing"
    fi
done
pass "${readme_count}/7 directory READMEs present"
echo ""

# Summary
echo "=== Summary ==="
if [[ ${ERRORS} -eq 0 && ${WARNINGS} -eq 0 ]]; then
    echo -e "${GREEN}All checks passed!${NC}"
elif [[ ${ERRORS} -eq 0 ]]; then
    echo -e "${YELLOW}${WARNINGS} warning(s), 0 errors${NC}"
else
    echo -e "${RED}${ERRORS} error(s), ${WARNINGS} warning(s)${NC}"
fi

exit ${ERRORS}