install.sh

#!/bin/bash

# Atomic Bits - Install Script
# Copies Atomic Bits to a target project

set -euo pipefail

# Colors
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m'

# Get script directory (where atomic-bits lives)
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

# Get target directory
TARGET="${1:-.}"
TARGET="$(cd "$TARGET" 2>/dev/null && pwd)" || {
    echo -e "${RED}Error: Target directory '$1' does not exist${NC}"
    exit 1
}

echo -e "${GREEN}Atomic Bits Installer${NC}"
echo "━━━━━━━━━━━━━━━━━━━━━"
echo ""
echo "Source: $SCRIPT_DIR"
echo "Target: $TARGET"
echo ""

# Check if already installed
if [ -f "$TARGET/.atomic/bits.sh" ]; then
    echo -e "${YELLOW}Warning: Atomic Bits already exists in target.${NC}"
    read -p "Overwrite? (y/n) " -n 1 -r
    echo
    if [[ ! $REPLY =~ ^[Yy]$ ]]; then
        echo "Aborted."
        exit 0
    fi
fi

# Ask about permission mode
echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
echo ""
echo -e "${BLUE}Choose permission mode:${NC}"
echo ""
echo "  1) Safe Mode (recommended)"
echo "     Claude will prompt for approval before file changes and commands."
echo "     Best for: learning, sensitive projects, first-time users."
echo ""
echo "  2) Bypass Mode (automated)"
echo "     Claude can read/write files and run commands without prompting."
echo "     Best for: trusted automation, disposable environments, experienced users."
echo ""
read -p "Select mode [1/2]: " -n 1 -r MODE_CHOICE
echo ""
echo ""

BYPASS_MODE=false
if [[ $MODE_CHOICE == "2" ]]; then
    BYPASS_MODE=true
    echo -e "${YELLOW}Bypass mode selected.${NC} Permissions will be skipped."
else
    echo -e "${GREEN}Safe mode selected.${NC} You'll approve actions as you go."
fi
echo ""

# Create directories
mkdir -p "$TARGET/.atomic/phases"
mkdir -p "$TARGET/.claude/commands"
mkdir -p "$TARGET/.claude/agents"

# Copy .atomic files
echo "Copying .atomic/..."
cp "$SCRIPT_DIR/.atomic/bits.sh" "$TARGET/.atomic/"
cp "$SCRIPT_DIR/.atomic/patterns.md" "$TARGET/.atomic/"
cp "$SCRIPT_DIR/.atomic/project.md" "$TARGET/.atomic/"
cp "$SCRIPT_DIR/.atomic/roadmap.md" "$TARGET/.atomic/"
cp "$SCRIPT_DIR/.atomic/state.json" "$TARGET/.atomic/"
chmod +x "$TARGET/.atomic/bits.sh"

# Copy .claude files
echo "Copying .claude/..."
cp "$SCRIPT_DIR/.claude/commands/atomic.md" "$TARGET/.claude/commands/"
cp "$SCRIPT_DIR/.claude/agents/executor.md" "$TARGET/.claude/agents/"
cp "$SCRIPT_DIR/.claude/agents/verifier.md" "$TARGET/.claude/agents/"

# Generate settings.json based on mode choice
echo "Configuring permissions..."
if [ "$BYPASS_MODE" = true ]; then
    cat > "$TARGET/.claude/settings.json" << 'EOF'
{
  "permissions": {
    "defaultMode": "bypassPermissions",
    "deny": [
      "Read(.env)",
      "Read(.env.*)",
      "Read(**/secrets/**)",
      "Read(**/*.pem)",
      "Read(**/*.key)"
    ]
  }
}
EOF
else
    cat > "$TARGET/.claude/settings.json" << 'EOF'
{
  "permissions": {
    "deny": [
      "Read(.env)",
      "Read(.env.*)",
      "Read(**/secrets/**)",
      "Read(**/*.pem)",
      "Read(**/*.key)"
    ]
  }
}
EOF
fi

echo ""
echo -e "${GREEN}✓ Installed successfully!${NC}"
echo ""
echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
echo ""

if [ "$BYPASS_MODE" = true ]; then
    echo -e "${YELLOW}Installed in BYPASS MODE${NC}"
    echo ""
    echo "Permissions are disabled. Claude can read, write, and execute without prompting."
    echo ""
    echo "Getting started:"
    echo ""
    echo "  cd $TARGET"
    echo "  claude"
    echo "  /atomic"
    echo ""
    echo "For multi-phase automation with fresh context:"
    echo ""
    echo "  ./.atomic/bits.sh --confirm"
    echo ""
    echo -e "${YELLOW}Safety tips:${NC}"
    echo "  • Commit your work to git before running"
    echo "  • Review the generated roadmap.md"
    echo "  • Consider running in a container/VM"
else
    echo -e "${GREEN}Installed in SAFE MODE${NC}"
    echo ""
    echo "Claude will prompt for approval before file changes and commands."
    echo ""
    echo "Getting started:"
    echo ""
    echo "  cd $TARGET"
    echo "  claude"
    echo "  /atomic"
    echo ""
    echo "For multi-phase automation (requires --confirm):"
    echo ""
    echo "  ./.atomic/bits.sh --confirm"
    echo ""
    echo "Note: bits.sh always uses bypass mode for automation."
    echo "You can change modes later by editing .claude/settings.json"
fi

echo ""
echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
echo ""