feat: add Termux build/setup scripts and client config example

scripts/termux-setup.sh

@@ -0,0 +1,125 @@
+#!/data/data/com.termux/files/usr/bin/bash
+# Termux setup script for quicprochat.
+#
+# Run this ON your Android device inside Termux after copying the qpc binary.
+#
+# What it does:
+#   1. Installs the qpc binary to $PREFIX/bin/
+#   2. Creates a default config at ~/.config/qpc/config.toml
+#   3. Sets up a data directory for state files
+#
+# Usage:
+#   # If you have a pre-built binary on /sdcard:
+#   bash termux-setup.sh
+#
+#   # If you want to build from source in Termux:
+#   bash termux-setup.sh --build
+
+set -euo pipefail
+
+PREFIX="${PREFIX:-/data/data/com.termux/files/usr}"
+CONFIG_DIR="$HOME/.config/qpc"
+DATA_DIR="$HOME/.local/share/qpc"
+
+echo "=== quicprochat Termux setup ==="
+echo ""
+
+# ── Install binary ────────────────────────────────────────────────────────────
+
+if [ "${1:-}" = "--build" ]; then
+    echo "Building from source (this will take a while)..."
+    pkg install -y rust git
+    if [ ! -d "$HOME/quicprochat" ]; then
+        echo "Clone the repository first:"
+        echo "  git clone <repo-url> ~/quicprochat"
+        exit 1
+    fi
+    cd "$HOME/quicprochat"
+    cargo build --release --bin qpc --features tui
+    cp target/release/qpc "$PREFIX/bin/qpc"
+    echo "  Built and installed qpc to $PREFIX/bin/"
+else
+    # Look for pre-built binary in common locations.
+    FOUND=""
+    for candidate in \
+        /sdcard/Download/qpc \
+        /sdcard/qpc \
+        "$HOME/qpc" \
+        "$HOME/storage/downloads/qpc"; do
+        if [ -f "$candidate" ]; then
+            FOUND="$candidate"
+            break
+        fi
+    done
+
+    if [ -z "$FOUND" ]; then
+        echo "No qpc binary found. Place it in one of:"
+        echo "  /sdcard/Download/qpc"
+        echo "  ~/qpc"
+        echo ""
+        echo "Or build from source: bash $0 --build"
+        exit 1
+    fi
+
+    cp "$FOUND" "$PREFIX/bin/qpc"
+    chmod +x "$PREFIX/bin/qpc"
+    echo "  Installed $FOUND -> $PREFIX/bin/qpc"
+fi
+
+# ── Create directories ────────────────────────────────────────────────────────
+
+mkdir -p "$CONFIG_DIR" "$DATA_DIR"
+
+# ── Create default config ─────────────────────────────────────────────────────
+
+if [ -f "$CONFIG_DIR/config.toml" ]; then
+    echo "  Config already exists: $CONFIG_DIR/config.toml (not overwriting)"
+else
+    # Prompt for basic settings.
+    echo ""
+    read -rp "Server address [127.0.0.1:7000]: " SERVER
+    SERVER="${SERVER:-127.0.0.1:7000}"
+
+    read -rp "Username: " USERNAME
+
+    # Extract hostname for TLS server_name.
+    SERVER_HOST="${SERVER%%:*}"
+
+    cat > "$CONFIG_DIR/config.toml" << TOML
+# quicprochat client config — generated by termux-setup.sh
+# Edit this file instead of passing CLI flags.
+# Precedence: CLI flags > env vars > this file > defaults.
+
+# Server to connect to.
+server = "$SERVER"
+server_name = "$SERVER_HOST"
+
+# Your username (OPAQUE login — password is prompted on first run).
+username = "$USERNAME"
+
+# Skip TLS verification for self-signed certs (set false for production).
+danger_accept_invalid_certs = true
+
+# Don't try to auto-start a local server.
+no_server = true
+
+# State/data files are stored here (relative paths resolve from cwd,
+# so use absolute paths on Termux).
+state = "$DATA_DIR/qpc-state.bin"
+# ca_cert = "/path/to/server-cert.der"
+TOML
+    echo "  Created config: $CONFIG_DIR/config.toml"
+fi
+
+# ── Done ──────────────────────────────────────────────────────────────────────
+
+echo ""
+echo "=== Setup complete ==="
+echo ""
+echo "Start chatting:"
+echo "  qpc"
+echo ""
+echo "Edit your config:"
+echo "  nano ~/.config/qpc/config.toml"
+echo ""
+echo "Your data is stored in: $DATA_DIR"