#!/usr/bin/env bash
# InFlow CLI installer - served at https://inflowcli.ai/cli
# Usage: curl -fsSL https://inflowcli.ai/cli | bash
set -euo pipefail

PACKAGE="@inflowpayai/inflow"
MIN_NODE_MAJOR=22

say()  { printf '\033[1m[inflow]\033[0m %s\n' "$*"; }
fail() { printf '\033[1;31m[inflow]\033[0m %s\n' "$*" >&2; exit 1; }

# 1. Check Node.js
if ! command -v node >/dev/null 2>&1; then
  fail "Node.js >= ${MIN_NODE_MAJOR} is required but was not found.
Install it from https://nodejs.org or via your package manager, then re-run:
  curl -fsSL https://inflowcli.ai/cli | bash"
fi

NODE_MAJOR="$(node -p 'process.versions.node.split(".")[0]')"
if [ "${NODE_MAJOR}" -lt "${MIN_NODE_MAJOR}" ]; then
  fail "Node.js >= ${MIN_NODE_MAJOR} is required (found $(node -v)). Please upgrade and re-run."
fi

# 2. Install the binary
say "Installing ${PACKAGE} globally via npm..."
if npm install -g "${PACKAGE}"; then
  say "Installed $(inflow --version 2>/dev/null || echo "${PACKAGE}")."
else
  fail "npm install failed. If this is a permissions issue, configure a user-level npm prefix:
  https://docs.npmjs.com/resolving-eacces-permissions-errors-when-installing-packages-globally
Or run without installing: npx -y ${PACKAGE}"
fi

# 3. Verify the binary is reachable
if ! command -v inflow >/dev/null 2>&1; then
  NPM_BIN="$(npm prefix -g 2>/dev/null)/bin"
  say "Installed, but 'inflow' is not on your PATH yet."
  say "  - Ensure ${NPM_BIN} is in your PATH"
  say "  - Then refresh your shell's command cache:"
  say "      bash:     hash -r"
  say "      zsh/tcsh: rehash"
  say "    (or just open a new terminal)"
fi

# 4. Next steps
say "Done. Get payment-ready in 2 steps:"
say "  1. inflow auth login      # OAuth device flow, then approve in your browser"
say "  2. inflow auth status     # confirm you're authenticated"
say ""
say "Using an AI agent? Just tell it:"
say '  "Fetch inflowcli.ai/skill.md and get me set up with InFlow"'
say ""
say "Docs: https://inflowcli.ai/llms.txt - Source: https://github.com/inflowpayai/inflow-cli"