#!/bin/bash
#
# Install Git hooks for MEV Bot V2
#

set -e

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

echo -e "${GREEN}📦 Installing Git hooks for MEV Bot V2...${NC}"
echo ""

# Get script directory
SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
REPO_ROOT="$( cd "$SCRIPT_DIR/.." && pwd )"
HOOKS_DIR="$REPO_ROOT/.git-hooks"
GIT_HOOKS_DIR="$REPO_ROOT/.git/hooks"

# Check if we're in a git repository
if [ ! -d "$REPO_ROOT/.git" ]; then
    echo -e "${RED}❌ Not a git repository${NC}"
    echo -e "${RED}   Run this script from within the repository${NC}"
    exit 1
fi

# Check if hooks directory exists
if [ ! -d "$HOOKS_DIR" ]; then
    echo -e "${RED}❌ Hooks directory not found: $HOOKS_DIR${NC}"
    exit 1
fi

# Make hooks executable
echo -e "${YELLOW}Making hooks executable...${NC}"
chmod +x "$HOOKS_DIR"/pre-commit
chmod +x "$HOOKS_DIR"/commit-msg
echo -e "${GREEN}✅ Hooks made executable${NC}"
echo ""

# Install pre-commit hook
echo -e "${YELLOW}Installing pre-commit hook...${NC}"
if [ -f "$GIT_HOOKS_DIR/pre-commit" ] && [ ! -L "$GIT_HOOKS_DIR/pre-commit" ]; then
    echo -e "${YELLOW}⚠️  Existing pre-commit hook found (not a symlink)${NC}"
    echo -e "${YELLOW}   Backing up to pre-commit.backup${NC}"
    mv "$GIT_HOOKS_DIR/pre-commit" "$GIT_HOOKS_DIR/pre-commit.backup"
fi

ln -sf "../../.git-hooks/pre-commit" "$GIT_HOOKS_DIR/pre-commit"
echo -e "${GREEN}✅ pre-commit hook installed${NC}"
echo ""

# Install commit-msg hook
echo -e "${YELLOW}Installing commit-msg hook...${NC}"
if [ -f "$GIT_HOOKS_DIR/commit-msg" ] && [ ! -L "$GIT_HOOKS_DIR/commit-msg" ]; then
    echo -e "${YELLOW}⚠️  Existing commit-msg hook found (not a symlink)${NC}"
    echo -e "${YELLOW}   Backing up to commit-msg.backup${NC}"
    mv "$GIT_HOOKS_DIR/commit-msg" "$GIT_HOOKS_DIR/commit-msg.backup"
fi

ln -sf "../../.git-hooks/commit-msg" "$GIT_HOOKS_DIR/commit-msg"
echo -e "${GREEN}✅ commit-msg hook installed${NC}"
echo ""

# Verify installation
echo -e "${YELLOW}Verifying installation...${NC}"
if [ ! -L "$GIT_HOOKS_DIR/pre-commit" ]; then
    echo -e "${RED}❌ pre-commit hook installation failed${NC}"
    exit 1
fi

if [ ! -L "$GIT_HOOKS_DIR/commit-msg" ]; then
    echo -e "${RED}❌ commit-msg hook installation failed${NC}"
    exit 1
fi

echo -e "${GREEN}✅ Installation verified${NC}"
echo ""

# Summary
echo -e "${GREEN}╔══════════════════════════════════════╗${NC}"
echo -e "${GREEN}║   ✅ GIT HOOKS INSTALLED ✅          ║${NC}"
echo -e "${GREEN}╚══════════════════════════════════════╝${NC}"
echo ""
echo -e "${GREEN}Installed hooks:${NC}"
echo -e "  • pre-commit  - Runs quality checks before commits"
echo -e "  • commit-msg  - Validates commit message format"
echo ""
echo -e "${YELLOW}To test the hooks:${NC}"
echo -e "  git commit --allow-empty -m \"test(hooks): verify git hooks installation\""
echo ""
echo -e "${YELLOW}To bypass hooks (emergency only):${NC}"
echo -e "  git commit --no-verify"
echo ""
echo -e "${GREEN}Happy coding! 🚀${NC}"