#!/usr/bin/env bash
#
# Set the version in every file that declares one.
#
# There are four, and they must agree: a mismatch means a published release
# looks older than what is installed, so the update either never offers or
# offers forever. This exists because a line-numbered `sed` edited the wrong
# line after a new crate shifted Cargo.toml down by one, and only the
# version-drift test noticed.
set -euo pipefail
[ $# -eq 1 ] || { echo "usage: $0 <version>" >&2; exit 1; }
NEW="$1"
ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"

# Matched by content and by section, never by line number.
python3 - "$ROOT" "$NEW" <<'PY'
import re, sys, json, pathlib
root, new = pathlib.Path(sys.argv[1]), sys.argv[2]

def sub_toml(path, count=1):
    p = root / path
    s = p.read_text()
    s2, n = re.subn(r'(?m)^version = "\d+\.\d+\.\d+"$', f'version = "{new}"', s, count=count)
    assert n == count, f"{path}: expected {count} version line(s), changed {n}"
    p.write_text(s2)

def sub_json(path):
    p = root / path
    s = p.read_text()
    s2, n = re.subn(r'"version":\s*"\d+\.\d+\.\d+"', f'"version": "{new}"', s, count=1)
    assert n == 1, f"{path}: no version field"
    json.loads(s2)  # refuse to write invalid JSON
    p.write_text(s2)

sub_toml("Cargo.toml")
sub_toml("gui/src-tauri/Cargo.toml")
sub_json("gui/src-tauri/tauri.conf.json")
sub_json("gui/package.json")
print(f"  version set to {new} in 4 files")
PY