#!/bin/sh
# crm-cli installer. Downloads the latest CLI bundle, installs to
# ~/.crm-cli (or $CRM_CLI_HOME), and symlinks `crm` into PATH.
#
# Usage:
#   curl -fsSL https://<host>/install.sh | sh
#
# Env overrides:
#   CRM_CLI_BASE_URL    Where to fetch crm-cli.tar.gz from. Defaults to the
#                       host this script was served from (baked at deploy).
#   CRM_CLI_HOME        Install dir (default: $HOME/.crm-cli).
#   CRM_CLI_BIN_DIR     Where to symlink the `crm` binary (default:
#                       $HOME/.local/bin).
#
# The proxy URL is baked into this script at deploy time. The API key is NOT
# — each user pastes their own after install (gets it from whoever runs the
# proxy). One token per user keeps revocation surgical.

set -eu

DEFAULT_BASE_URL="https://crm-cli.truly.you"
BASE_URL="${CRM_CLI_BASE_URL:-$DEFAULT_BASE_URL}"
INSTALL_DIR="${CRM_CLI_HOME:-$HOME/.crm-cli}"
BIN_DIR="${CRM_CLI_BIN_DIR:-$HOME/.local/bin}"

# Detect un-substituted bundle. We deliberately use a glob (not the literal
# placeholder string) so the proxy's "replace https://crm-cli.truly.you → real URL"
# substitution doesn't rewrite this check too.
case "$BASE_URL" in
    PLACEHOLDER_*)
        echo "CRM_CLI_BASE_URL not set and no default baked into this script." >&2
        echo "Set CRM_CLI_BASE_URL to your deploy URL and rerun." >&2
        exit 1
        ;;
esac
BASE_URL="${BASE_URL%/}"

err() { printf "error: %s\n" "$*" >&2; exit 1; }
info() { printf "→ %s\n" "$*"; }

# Prereqs ---------------------------------------------------------------------
command -v node >/dev/null 2>&1 || err "Node 18+ is required."
NODE_MAJOR=$(node -p "process.versions.node.split('.')[0]" 2>/dev/null || echo 0)
[ "$NODE_MAJOR" -ge 18 ] 2>/dev/null || err "Node $NODE_MAJOR detected; need 18+."
command -v curl >/dev/null 2>&1 || err "curl is required."
command -v tar  >/dev/null 2>&1 || err "tar is required."

# Download + extract ----------------------------------------------------------
info "Downloading bundle from $BASE_URL/crm-cli.tar.gz"
TMP=$(mktemp -d)
trap 'rm -rf "$TMP"' EXIT INT TERM
HTTP_CODE=$(curl -fsSL -o "$TMP/bundle.tar.gz" -w "%{http_code}" "$BASE_URL/crm-cli.tar.gz" || echo "0")
[ -f "$TMP/bundle.tar.gz" ] || err "Download failed (HTTP $HTTP_CODE)."
tar -xzf "$TMP/bundle.tar.gz" -C "$TMP" || err "Failed to extract bundle."

# Install ---------------------------------------------------------------------
info "Installing to $INSTALL_DIR"
mkdir -p "$INSTALL_DIR"
rm -rf "$INSTALL_DIR/bin" "$INSTALL_DIR/lib" "$INSTALL_DIR/mcp" "$INSTALL_DIR/scripts"
cp -R "$TMP/." "$INSTALL_DIR/"
chmod +x "$INSTALL_DIR/bin/crm.js"

# Record install source so `crm update` can self-bootstrap later.
printf "%s\n" "$BASE_URL" > "$INSTALL_DIR/.install-source"

# Symlink ---------------------------------------------------------------------
mkdir -p "$BIN_DIR"
ln -sfn "$INSTALL_DIR/bin/crm.js" "$BIN_DIR/crm"

# Seed config with the proxy URL so the user only has to paste their API key.
CONFIG_DIR="$HOME/.config/crm-cli"
CONFIG_FILE="$CONFIG_DIR/config.json"
HAS_KEY=""
if [ -f "$CONFIG_FILE" ]; then
    # Existing config — never overwrite. Detect if it already has a key.
    if grep -q '"apiKey"[^"]*"[^"]\{1,\}"' "$CONFIG_FILE" 2>/dev/null; then
        HAS_KEY=1
    fi
    info "Existing config preserved: $CONFIG_FILE"
else
    mkdir -p "$CONFIG_DIR"
    cat > "$CONFIG_FILE" <<JSON
{
  "url": "$BASE_URL",
  "apiKey": ""
}
JSON
    chmod 600 "$CONFIG_FILE"
fi

# Report ----------------------------------------------------------------------
echo
info "crm-cli installed."
echo
echo "Binary: $BIN_DIR/crm"
echo "Source: $INSTALL_DIR"
echo

case ":$PATH:" in
    *":$BIN_DIR:"*) ;;
    *) echo "⚠ $BIN_DIR is not in your PATH. Add this to your shell rc:"
       echo "    export PATH=\"\$PATH:$BIN_DIR\""
       echo ;;
esac

if [ -n "$HAS_KEY" ]; then
    echo "Already have an API key configured — you're good."
    echo "Try:  crm members list"
else
    echo "URL baked in: $BASE_URL"
    echo
    echo "Paste your API key once (get it from whoever runs the proxy):"
    echo "  crm config set --api-key <token>"
    echo
    echo "Then:"
    echo "  crm members list"
fi
echo
echo "Upgrade later with:  crm update"
echo
echo "Wire up Claude Desktop MCP (uses your existing config — non-interactive):"
echo "  node $INSTALL_DIR/scripts/setup-claude-desktop.js"
echo