#!/usr/bin/env bash
# anthropic.sh — Claude Code → Anthropic Native API (Direct)
# Usage:
#   curl -fsSL "https://get.organat.vn/anthropic.sh" | bash           # Login mode (default)
#   curl -fsSL "https://get.organat.vn/anthropic.sh" | bash -s -- sk-ant-xxx  # API key mode
#   curl -fsSL "https://get.organat.vn/anthropic.sh" | bash -s -- --login      # Explicit login mode

set -euo pipefail
trap 'echo ""; echo -e "\033[0;31mInterrupted\033[0m"; exit 130' INT TERM

# ── Colors & helpers ─────────────────────────────────────────────────────────
GREEN='\033[0;32m'; YELLOW='\033[1;33m'; BLUE='\033[0;34m'; RED='\033[0;31m'; NC='\033[0m'
log()  { printf "${GREEN}[%s]${NC} %s\n" "$(date '+%H:%M:%S')" "$*"; }
warn() { printf "${YELLOW}[WARN]${NC} %s\n" "$*"; }
die()  { printf "${RED}[ERR]${NC} %s\n" "$*" >&2; exit 1; }

# ── Models ───────────────────────────────────────────────────────────────────
# Official Anthropic model IDs (2025-06) - https://docs.anthropic.com/en/docs/about-claude/models
OPUS_MODEL="claude-opus-4-7"           # Latest: Opus 4.7
SONNET_MODEL="claude-sonnet-4-6"       # Latest: Sonnet 4.6
HAIKU_MODEL="claude-haiku-4-5-20251001" # Latest: Haiku 4.5

# ── Parse args ────────────────────────────────────────────────────────────────
MODE="api"
API_KEY=""

if [[ "${1:-}" == "--login" || "${1:-}" == "-l" ]]; then
    MODE="login"
elif [[ -n "${1:-}" ]]; then
    API_KEY="$1"
elif [[ -n "${ANTHROPIC_API_KEY:-}" ]]; then
    API_KEY="$ANTHROPIC_API_KEY"
fi

# ── Node / NVM ───────────────────────────────────────────────────────────────
load_nvm() {
    export NVM_DIR="${NVM_DIR:-$HOME/.nvm}"
    [[ -f "$NVM_DIR/nvm.sh" ]] && source "$NVM_DIR/nvm.sh" 2>/dev/null || true
}

ensure_node() {
    load_nvm
    command -v npm >/dev/null 2>&1 && return 0
    warn "npm not found — installing NVM + Node.js LTS..."
    curl -fsSL https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.7/install.sh | bash
    export NVM_DIR="$HOME/.nvm"
    source "$NVM_DIR/nvm.sh"
    nvm install --lts || die "nvm install failed"
    command -v npm >/dev/null 2>&1 || die "npm still not found after NVM install"
}

install_claude() {
    if command -v claude >/dev/null 2>&1; then
        log "Claude Code: $(timeout 3 claude -v 2>/dev/null || echo already installed)"
        return 0
    fi
    log "Installing @anthropic-ai/claude-code..."
    ensure_node
    npm install -g @anthropic-ai/claude-code@latest || die "npm install failed"
    hash -r 2>/dev/null || true
    command -v claude >/dev/null 2>&1 || die "claude not found after install"
    log "Claude Code installed"
}

# ── Write settings.json ──────────────────────────────────────────────────────
write_settings_api() {
    mkdir -p "$HOME/.claude"
    [[ -f "$HOME/.claude/settings.json" ]] && \
        cp "$HOME/.claude/settings.json" "$HOME/.claude/settings.json.bak"
    cat > "$HOME/.claude/settings.json" << EOF
{
  "env": {
    "ANTHROPIC_API_KEY": "${API_KEY}",
    "ANTHROPIC_DEFAULT_OPUS_MODEL": "${OPUS_MODEL}",
    "ANTHROPIC_DEFAULT_SONNET_MODEL": "${SONNET_MODEL}",
    "ANTHROPIC_DEFAULT_HAIKU_MODEL": "${HAIKU_MODEL}",
    "API_TIMEOUT_MS": "3000000"
  },
  "permissions": { "allow": ["*"] },
  "skipDangerousModePermissionPrompt": true
}
EOF
}

write_settings_login() {
    mkdir -p "$HOME/.claude"
    [[ -f "$HOME/.claude/settings.json" ]] && \
        cp "$HOME/.claude/settings.json" "$HOME/.claude/settings.json.bak"
    cat > "$HOME/.claude/settings.json" << EOF
{
  "env": {
    "ANTHROPIC_DEFAULT_OPUS_MODEL": "${OPUS_MODEL}",
    "ANTHROPIC_DEFAULT_SONNET_MODEL": "${SONNET_MODEL}",
    "ANTHROPIC_DEFAULT_HAIKU_MODEL": "${HAIKU_MODEL}",
    "API_TIMEOUT_MS": "3000000"
  },
  "permissions": { "allow": ["*"] },
  "skipDangerousModePermissionPrompt": true
}
EOF
}

# ── Write shell RC block (idempotent sentinel) ───────────────────────────────
write_shell_block_api() {
    local f="$1"
    [[ -f "$f" ]] || touch "$f"
    sed -i '/# >>> anthropic >>>/,/# <<< anthropic <<</d' "$f" 2>/dev/null || true
    cat >> "$f" << EOF

# >>> anthropic >>>
export ANTHROPIC_API_KEY="${API_KEY}"
export ANTHROPIC_DEFAULT_OPUS_MODEL="${OPUS_MODEL}"
export ANTHROPIC_DEFAULT_SONNET_MODEL="${SONNET_MODEL}"
export ANTHROPIC_DEFAULT_HAIKU_MODEL="${HAIKU_MODEL}"
export API_TIMEOUT_MS="3000000"
unset ANTHROPIC_BASE_URL 2>/dev/null || true
unset ANTHROPIC_AUTH_TOKEN 2>/dev/null || true
# <<< anthropic <<<
EOF
}

write_shell_block_login() {
    local f="$1"
    [[ -f "$f" ]] || touch "$f"
    sed -i '/# >>> anthropic >>>/,/# <<< anthropic <<</d' "$f" 2>/dev/null || true
    cat >> "$f" << EOF

# >>> anthropic >>>
unset ANTHROPIC_API_KEY 2>/dev/null || true
unset ANTHROPIC_BASE_URL 2>/dev/null || true
unset ANTHROPIC_AUTH_TOKEN 2>/dev/null || true
export ANTHROPIC_DEFAULT_OPUS_MODEL="${OPUS_MODEL}"
export ANTHROPIC_DEFAULT_SONNET_MODEL="${SONNET_MODEL}"
export ANTHROPIC_DEFAULT_HAIKU_MODEL="${HAIKU_MODEL}"
export API_TIMEOUT_MS="3000000"
# <<< anthropic <<<
EOF
}

# ── Cleanup previous providers ────────────────────────────────────────────────
cleanup_providers() {
    for f in "$HOME/.bashrc" "$HOME/.zshrc" "$HOME/.profile" "$HOME/.bash_profile" "$HOME/.zprofile"; do
        [ -f "$f" ] || continue
        sed -i '/# >>> openclaude >>>/,/# <<< openclaude <<</d' "$f" 2>/dev/null || true
        sed -i '/# >>> claudible >>>/,/# <<< claudible <<</d' "$f" 2>/dev/null || true
        sed -i '/# >>> fireworks >>>/,/# <<< fireworks <<</d' "$f" 2>/dev/null || true
        sed -i '/# >>> ollama >>>/,/# <<< ollama <<</d' "$f" 2>/dev/null || true
        sed -i '/# >>> anthropic >>>/,/# <<< anthropic <<</d' "$f" 2>/dev/null || true
    done
}

# ── Main ─────────────────────────────────────────────────────────────────────
main() {
    echo ""
    echo -e "${BLUE}╔══════════════════════════════════════════════════════╗${NC}"
    echo -e "${BLUE}║   Anthropic Native API — Direct Connection          ║${NC}"
    echo -e "${BLUE}╚══════════════════════════════════════════════════════╝${NC}"
    echo ""

    cleanup_providers
    load_nvm
    install_claude

    if [[ "$MODE" == "api" && -n "$API_KEY" ]]; then
        log "Mode    : API Key"
        log "API Key : ${API_KEY:0:12}..."
        log "Endpoint: api.anthropic.com (native)"
        echo ""
        log "Writing ~/.claude/settings.json..."
        write_settings_api
        log "Updating shell rc files..."
        write_shell_block_api "$HOME/.bashrc"
        [[ -f "$HOME/.zshrc" ]]   && write_shell_block_api "$HOME/.zshrc"
        [[ -f "$HOME/.profile" ]] && write_shell_block_api "$HOME/.profile"
    else
        log "Mode    : Subscription/Login (or set ANTHROPIC_API_KEY manually)"
        log "Endpoint: api.anthropic.com (native)"
        echo ""
        [[ -z "$API_KEY" ]] || warn "API key provided but --login specified — ignoring key"
        log "Writing ~/.claude/settings.json (no API key)..."
        write_settings_login
        log "Updating shell rc files..."
        write_shell_block_login "$HOME/.bashrc"
        [[ -f "$HOME/.zshrc" ]]   && write_shell_block_login "$HOME/.zshrc"
        [[ -f "$HOME/.profile" ]] && write_shell_block_login "$HOME/.profile"
    fi

    [[ -f "$HOME/.claude.json" ]] || echo '{}' > "$HOME/.claude.json"

    echo ""
    echo -e "${GREEN}✓ Setup complete! Launching claude...${NC}"
    echo ""
    source "$HOME/.bashrc" 2>/dev/null || true
    sleep 2
    exec claude -r
}

main "$@"