#!/bin/sh
# Semantr installer.
#
#   curl -LsSf https://semantr.com/install.sh | sh
#
# Node ships npm, so `npx thing` assumes nothing. Python has no equivalent — which is why
# `uvx semantr` fails with "command not found" for anyone who does not already use uv, and
# why `pip install` fails on Debian and Ubuntu system Python with externally-managed-
# environment. This script is the one instruction that works either way: it uses uv if
# present, installs it if not, and falls back to pip only where uv cannot be had.
#
# POSIX sh, no bashisms — /bin/sh is dash on Debian and Ubuntu.

set -eu

BOLD=''; DIM=''; RED=''; GREEN=''; RESET=''
if [ -t 1 ] && [ -z "${NO_COLOR:-}" ]; then
    BOLD=$(printf '\033[1m'); DIM=$(printf '\033[2m'); RED=$(printf '\033[31m')
    GREEN=$(printf '\033[32m'); RESET=$(printf '\033[0m')
fi

say()  { printf '%s\n' "$*"; }
step() { printf '%s==>%s %s\n' "$BOLD" "$RESET" "$*"; }
die()  { printf '%serror:%s %s\n' "$RED" "$RESET" "$*" >&2; exit 1; }

has() { command -v "$1" >/dev/null 2>&1; }

say ""
say "${BOLD}Semantr${RESET} — find out what your organisation is actually using AI for"
say ""

# ---------------------------------------------------------------------------- uv

if has uv; then
    step "uv is already installed"
else
    step "Installing uv (the Python tool runner Semantr ships through)"
    if has curl; then
        curl -LsSf https://astral.sh/uv/install.sh | sh || die "could not install uv"
    elif has wget; then
        wget -qO- https://astral.sh/uv/install.sh | sh || die "could not install uv"
    else
        die "need curl or wget to install uv. Install one, or use: pip install semantr"
    fi

    # The uv installer puts binaries here but only edits shell profiles, which do not
    # affect the shell this script is running in.
    for candidate in "$HOME/.local/bin" "$HOME/.cargo/bin"; do
        if [ -x "$candidate/uv" ]; then
            PATH="$candidate:$PATH"
            export PATH
            break
        fi
    done
    has uv || die "uv installed but is not on PATH — open a new terminal and re-run this"
fi

# -------------------------------------------------------------------------- semantr

# Overridable so a version can be pinned (SEMANTR_PACKAGE=semantr==1.2.0) and so this
# script is testable against a local wheel before a release is published.
PACKAGE="${SEMANTR_PACKAGE:-semantr}"

step "Installing $PACKAGE"
uv tool install --force "$PACKAGE" || die "could not install $PACKAGE"

# `uv tool install` places shims in uv's own bin directory, which is on PATH for new
# shells but not necessarily this one.
TOOL_BIN=$(uv tool dir --bin 2>/dev/null || echo "$HOME/.local/bin")
case ":$PATH:" in
    *":$TOOL_BIN:"*) ;;
    *) PATH="$TOOL_BIN:$PATH"; export PATH ;;
esac

has semantr || die "semantr installed to $TOOL_BIN but is not on PATH"

say ""
say "${GREEN}Installed.${RESET} $(semantr --version)"
say ""
say "Run it. It finds your Bedrock invocation logs itself — no arguments, no account:"
say ""
say "    ${BOLD}semantr${RESET}"
say ""
say "${DIM}Reading your logs is free. Naming what it finds costs about a cent, and it asks"
say "before spending anything. If it is not on your PATH yet, open a new terminal.${RESET}"
say ""