#!/bin/bash
set -e

# Require root
if [[ $EUID -ne 0 ]]; then
    echo "This script must be run as root." >&2
    exit 1
fi

# Installs bb64 on the local machine.
# 1. determines the architecture of the local machine
# 2. downloads the appropriate bb64 binary from the latest public release on Gitea (https://gitea.jde.nz/j/bb64/releases)
# 3. makes the bb64 binary executable
# 4. moves the bb64 binary to /usr/local/bin
# 5. prints a message to the user


# 1. Determine architecture
# ----------------------------------------------------------------------------- 

ARCH=$(uname -m)
if [[ "$ARCH" == "x86_64" ]]; then
    BIN=bb64.amd64
elif [[ "$ARCH" == "aarch64" || "$ARCH" == "arm64" ]]; then
    BIN=bb64.arm64
else
    echo "Unsupported architecture: $ARCH" >&2
    exit 1
fi

# 2. Get latest release tag from Gitea API
# -----------------------------------------------------------------------------
REPO_API="https://gitea.jde.nz/api/v1/repos/j/bb64/releases/latest"
if command -v jq >/dev/null 2>&1; then
    TAG=$(curl -s "$REPO_API" | jq -r '.tag_name')
else
    TAG=$(curl -s "$REPO_API" | grep -o '"tag_name"[ ]*:[ ]*\"[^\"]*\"' | head -1 | sed 's/.*: *\"\\([^\"]*\\)\"/\\1/')
fi

echo "Latest version of bb64 is: $TAG"

# 3. Download the appropriate binary to a temp directory
# -----------------------------------------------------------------------------
TMPDIR=$(mktemp -d)
trap 'rm -rf "$TMPDIR"' EXIT
URL="https://gitea.jde.nz/j/bb64/releases/download/$TAG/$BIN"
echo "Downloading $BIN from $URL..."

curl -fsSL -o "$TMPDIR/bb64" "$URL"

# 4. Make it executable
# -----------------------------------------------------------------------------
chmod +x "$TMPDIR/bb64"

# 5. Move to /usr/local/bin
# -----------------------------------------------------------------------------
mv "$TMPDIR/bb64" /usr/local/bin/bb64

# 6. Print success message
# -----------------------------------------------------------------------------
echo "bb64 installed successfully to /usr/local/bin/bb64 (version $TAG, arch $ARCH)"
echo " "
echo "try it out with:"
echo "    bb64 ZWNobyAiSGVsbG8td29ybGQhIGJiNjQgaXMgd29ya2luZy4i"