#!/usr/bin/env sh
# =============================================================================
# Aetheel — One-Click Installer
# =============================================================================
# Usage:
#   curl -fsSL http://10.0.0.59:3051/tanmay/Aetheel/raw/branch/main/install.sh | sh
#
# What this script does:
#   1. Checks prerequisites (git, python/uv)
#   2. Clones the repo
#   3. Sets up Python environment & installs dependencies
#   4. Creates .env from template
#   5. Walks you through token configuration
#   6. Optionally starts the bot
# =============================================================================

set -e

# ---------------------------------------------------------------------------
# Colors & Helpers
# ---------------------------------------------------------------------------

RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
CYAN='\033[0;36m'
BOLD='\033[1m'
NC='\033[0m' # No Color

info()    { printf "${BLUE}ℹ${NC}  %s\n" "$1"; }
success() { printf "${GREEN}✓${NC}  %s\n" "$1"; }
warn()    { printf "${YELLOW}⚠${NC}  %s\n" "$1"; }
error()   { printf "${RED}✗${NC}  %s\n" "$1"; }
step()    { printf "\n${BOLD}${CYAN}▸ %s${NC}\n" "$1"; }

# ---------------------------------------------------------------------------
# Banner
# ---------------------------------------------------------------------------

printf "\n"
printf "${BOLD}${CYAN}"
printf "  ╔══════════════════════════════════════════╗\n"
printf "  ║                                          ║\n"
printf "  ║       ⚔️  Aetheel Installer               ║\n"
printf "  ║       Personal AI for Slack              ║\n"
printf "  ║                                          ║\n"
printf "  ╚══════════════════════════════════════════╝\n"
printf "${NC}\n"

# ---------------------------------------------------------------------------
# 1. Check Prerequisites
# ---------------------------------------------------------------------------

step "Checking prerequisites"

# Git
if command -v git >/dev/null 2>&1; then
    success "git $(git --version | awk '{print $3}')"
else
    error "git is not installed"
    printf "  Install: https://git-scm.com/downloads\n"
    exit 1
fi

# Python / uv
HAS_UV=false
HAS_PYTHON=false

if command -v uv >/dev/null 2>&1; then
    success "uv $(uv --version 2>/dev/null | head -1)"
    HAS_UV=true
elif command -v python3 >/dev/null 2>&1; then
    PY_VER=$(python3 --version 2>&1 | awk '{print $2}')
    success "python3 ${PY_VER}"
    HAS_PYTHON=true
elif command -v python >/dev/null 2>&1; then
    PY_VER=$(python --version 2>&1 | awk '{print $2}')
    success "python ${PY_VER}"
    HAS_PYTHON=true
else
    error "Neither uv nor python3 found"
    printf "  Install uv (recommended): ${BOLD}curl -LsSf https://astral.sh/uv/install.sh | sh${NC}\n"
    printf "  Or install Python 3.14+:  https://python.org/downloads\n"
    exit 1
fi

# AI Runtime (optional check)
if command -v opencode >/dev/null 2>&1; then
    success "opencode CLI found"
elif command -v claude >/dev/null 2>&1; then
    success "claude CLI found"
else
    warn "No AI runtime found (opencode or claude)"
    printf "  You'll need one of:\n"
    printf "    • OpenCode:    curl -fsSL https://opencode.ai/install | bash\n"
    printf "    • Claude Code: npm install -g @anthropic-ai/claude-code\n"
fi

# ---------------------------------------------------------------------------
# 2. Choose Install Directory
# ---------------------------------------------------------------------------

step "Setting up Aetheel"

INSTALL_DIR="${AETHEEL_DIR:-$HOME/aetheel}"

if [ -d "$INSTALL_DIR" ]; then
    warn "Directory already exists: $INSTALL_DIR"
    printf "  Pulling latest changes...\n"
    cd "$INSTALL_DIR"
    git pull --ff-only 2>/dev/null || warn "Could not pull (you may have local changes)"
else
    info "Cloning into $INSTALL_DIR"
    git clone http://10.0.0.59:3051/tanmay/Aetheel.git "$INSTALL_DIR"
    cd "$INSTALL_DIR"
    success "Repository cloned"
fi

# ---------------------------------------------------------------------------
# 3. Install Dependencies
# ---------------------------------------------------------------------------

step "Installing dependencies"

if [ "$HAS_UV" = true ]; then
    info "Using uv for dependency management"
    uv sync 2>&1 | tail -5
    success "Dependencies installed via uv"
else
    info "Using pip for dependency management"
    python3 -m venv .venv 2>/dev/null || python -m venv .venv
    . .venv/bin/activate
    pip install -r requirements.txt 2>&1 | tail -3
    success "Dependencies installed via pip"
fi

# ---------------------------------------------------------------------------
# 4. Configure .env
# ---------------------------------------------------------------------------

step "Configuration"

if [ -f .env ]; then
    warn ".env already exists — skipping token setup"
    info "Edit $INSTALL_DIR/.env to update your tokens"
else
    cp .env.example .env
    success "Created .env from template"

    printf "\n"
    printf "  ${BOLD}You need two Slack tokens to proceed:${NC}\n"
    printf "  1. Bot Token  (xoxb-...)  — OAuth & Permissions page\n"
    printf "  2. App Token  (xapp-...)  — Basic Information → App-Level Tokens\n"
    printf "\n"
    printf "  See: ${CYAN}docs/slack-setup.md${NC} for full instructions\n"
    printf "\n"

    # Interactive token entry
    printf "  ${BOLD}Enter your Slack Bot Token${NC} (xoxb-...) or press Enter to skip: "
    read -r BOT_TOKEN
    if [ -n "$BOT_TOKEN" ]; then
        if command -v sed >/dev/null 2>&1; then
            sed -i.bak "s|SLACK_BOT_TOKEN=.*|SLACK_BOT_TOKEN=${BOT_TOKEN}|" .env
            rm -f .env.bak
            success "Bot token saved"
        fi
    else
        warn "Skipped — edit .env manually before starting"
    fi

    printf "  ${BOLD}Enter your Slack App Token${NC} (xapp-...) or press Enter to skip: "
    read -r APP_TOKEN
    if [ -n "$APP_TOKEN" ]; then
        if command -v sed >/dev/null 2>&1; then
            sed -i.bak "s|SLACK_APP_TOKEN=.*|SLACK_APP_TOKEN=${APP_TOKEN}|" .env
            rm -f .env.bak
            success "App token saved"
        fi
    else
        warn "Skipped — edit .env manually before starting"
    fi
fi

# ---------------------------------------------------------------------------
# 5. Create Data Directories
# ---------------------------------------------------------------------------

step "Setting up data directories"

mkdir -p "$HOME/.aetheel/workspace/daily"
success "Created ~/.aetheel/workspace/"
info "Identity files (SOUL.md, USER.md, MEMORY.md) will be auto-generated on first run"

# ---------------------------------------------------------------------------
# 6. Done!
# ---------------------------------------------------------------------------

printf "\n"
printf "${BOLD}${GREEN}"
printf "  ╔══════════════════════════════════════════╗\n"
printf "  ║                                          ║\n"
printf "  ║       ✅  Aetheel is ready!               ║\n"
printf "  ║                                          ║\n"
printf "  ╚══════════════════════════════════════════╝\n"
printf "${NC}\n"

printf "  ${BOLD}To start Aetheel:${NC}\n"
printf "\n"
printf "    cd %s\n" "$INSTALL_DIR"

if [ "$HAS_UV" = true ]; then
    printf "    uv run python main.py\n"
else
    printf "    source .venv/bin/activate\n"
    printf "    python main.py\n"
fi

printf "\n"
printf "  ${BOLD}Other commands:${NC}\n"
printf "    --claude     Use Claude Code instead of OpenCode\n"
printf "    --test       Echo mode (no AI, for testing Slack)\n"
printf "    --help       Show all options\n"
printf "\n"
printf "  ${BOLD}Files:${NC}\n"
printf "    Config:      %s/.env\n" "$INSTALL_DIR"
printf "    Memory:      ~/.aetheel/workspace/\n"
printf "    Docs:        %s/docs/\n" "$INSTALL_DIR"
printf "\n"

# Offer to start
printf "  ${BOLD}Start Aetheel now?${NC} [y/N] "
read -r START_NOW
if [ "$START_NOW" = "y" ] || [ "$START_NOW" = "Y" ]; then
    printf "\n"
    info "Starting Aetheel..."
    if [ "$HAS_UV" = true ]; then
        exec uv run python main.py
    else
        exec python main.py
    fi
fi

printf "\n"