#!/bin/sh
# Weft installer — the execution ledger for autonomous coding agents.
#   curl -fsSL https://weftgate.com/install | sh
# Installs weftd (hub + gate + console), weft (CLI + git bridge) and
# weft-mcp (MCP agent door) into ~/.weft/bin. No sudo, no daemon, no signup.
set -eu

VERSION="${WEFT_VERSION:-0.1.0}"
PREFIX="${WEFT_PREFIX:-$HOME/.weft}"
BIN="$PREFIX/bin"
REPO="spranab/weft"

say() { printf '\033[33m%s\033[0m\n' "$*"; }
die() { printf '\033[31mweft: %s\033[0m\n' "$*" >&2; exit 1; }

case "$(uname -s)" in
  Linux)  TARGET="x86_64-linux";  ARCHIVE="tar.gz" ;;
  Darwin) die "macOS binaries are not published yet — build from source:
    git clone https://github.com/$REPO && cd weft && cargo build --release" ;;
  *)      die "unsupported platform $(uname -s). On Windows use the .zip from
    https://github.com/$REPO/releases/latest" ;;
esac
[ "$(uname -m)" = "x86_64" ] || die "only x86_64 is published today (got $(uname -m))"

URL="https://github.com/$REPO/releases/download/v$VERSION/weft-$VERSION-$TARGET.$ARCHIVE"
TMP="$(mktemp -d)"
trap 'rm -rf "$TMP"' EXIT

say "→ downloading weft v$VERSION ($TARGET)"
if command -v curl >/dev/null 2>&1; then
  curl -fsSL "$URL" -o "$TMP/weft.tar.gz" || die "download failed: $URL"
elif command -v wget >/dev/null 2>&1; then
  wget -qO "$TMP/weft.tar.gz" "$URL" || die "download failed: $URL"
else
  die "need curl or wget"
fi

mkdir -p "$BIN"
tar xzf "$TMP/weft.tar.gz" -C "$BIN"
chmod +x "$BIN/weftd" "$BIN/weft" "$BIN/weft-mcp" 2>/dev/null || true

printf '\n\033[32m✓ installed\033[0m %s\n' "$BIN/{weftd,weft,weft-mcp}"

case ":$PATH:" in
  *":$BIN:"*) ;;
  *) printf '\nAdd it to your PATH:\n  \033[33mexport PATH="%s:$PATH"\033[0m\n' "$BIN"
     printf '  (append that to ~/.bashrc or ~/.zshrc to make it stick)\n' ;;
esac

Y=$(printf '\033[33m'); D=$(printf '\033[0m'); G=$(printf '\033[2m')

cat <<EOF

Start a hub — console at http://localhost:8747:

  ${Y}weftd${D}

Give an agent the door (any MCP host — Hermes, OpenClaw, Claude Code, Codex):

  ${G}{ "mcpServers": { "weft": { "command": "$BIN/weft-mcp" } } }${D}

Bridge an existing GitHub repo, let agents land certified work, export it back:

  ${Y}weft clone https://github.com/you/repo${D}
  ${Y}weft export --git repo${D}   ${G}# conventional commits, provenance in trailers${D}

See it prove itself in two minutes:

  ${Y}git clone https://github.com/spranab/weft && cd weft${D}
  ${Y}cargo run --release -p weftd --example paper${D}   ${G}# 4 local models, 1 refused citation${D}

Why: verification — not human review — is the merge gate. Every change carries
signed provenance, machine-checkable intent, and evidence.
Docs: https://weftgate.com    Agents: https://weftgate.com/llms.txt
EOF