#!/bin/sh
#
# Bump the canonical zyginit version.
#
# Usage: ./scripts/bump-version.sh <new-version>
#
# Rewrites in lock-step:
#   - reef.toml                          (canonical)
#   - tools/zygctl/reef.toml
#   - src/version.reef                   (regenerated)
#   - tools/zygctl/src/version.reef      (regenerated)
#   - tools/sysv-wrapper/version.h       (regenerated)
#
# Does NOT auto-commit. Review with `hg diff` and commit by hand.
#

# ----------------------------------------------------------------------------
# Helpers for regenerating templated files.
# ----------------------------------------------------------------------------

gen_reef_module() {
    project="$1"
    path="$2"
    version="$3"
    cat > "$path" <<EOF
/******************************************************************************
                __               ____                __
               / /   ___  ____ _/ __/_____________ _/ /__
              / /   / _ \\/ __ \`/ /_/ ___/ ___/ __ \`/ / _ \\
             / /___/  __/ /_/ / __(__  ) /__/ /_/ / /  __/
            /_____/\\___/\\__,_/_/ /____/\\___/\\__,_/_/\\___/

    (C)opyright 2025-2026, Leafscale, LLC -  https://www.leafscale.com

    Project: $project
   Filename: version.reef
    Authors: Chris Tusa <chris.tusa@leafscale.com>
    License: <see LICENSE file included with this source code>
Description: Generated version constant. Do not edit by hand — regenerated
             by scripts/bump-version.sh.

******************************************************************************/

module version

export
    fn VERSION(): string
end export

fn VERSION(): string
    return "$version"
end VERSION

end module
EOF
}

gen_c_header() {
    path="$1"
    version="$2"
    cat > "$path" <<EOF
/******************************************************************************
                __               ____                __
               / /   ___  ____ _/ __/_____________ _/ /__
              / /   / _ \\/ __ \`/ /_/ ___/ ___/ __ \`/ / _ \\
             / /___/  __/ /_/ / __(__  ) /__/ /_/ / /  __/
            /_____/\\___/\\__,_/_/ /____/\\___/\\__,_/_/\\___/

    (C)opyright 2025-2026, Leafscale, LLC -  https://www.leafscale.com

    Project: zyginit
   Filename: version.h
    Authors: Chris Tusa <chris.tusa@leafscale.com>
    License: <see LICENSE file included with this source code>
Description: Generated version constant. Do not edit by hand — regenerated
             by scripts/bump-version.sh.

******************************************************************************/

#ifndef ZYGINIT_VERSION_H
#define ZYGINIT_VERSION_H
#define ZYGINIT_VERSION "$version"
#endif
EOF
}

set -e

# This script uses GNU sed extensions (-i without backup suffix, 0,/addr/
# first-match range). Bumps are cut on a Linux dev host, not on Hammerhead;
# fail fast if invoked elsewhere so the breakage isn't a cryptic sed error.
case "$(uname -s)" in
    Linux) ;;
    *)
        echo "error: bump-version.sh requires GNU sed (Linux dev host)" >&2
        echo "       detected: $(uname -s)" >&2
        exit 1
        ;;
esac

if [ $# -ne 1 ]; then
    echo "usage: $0 <new-version>" >&2
    exit 1
fi

NEW="$1"

# Validate semver shape (no pre-release suffix yet).
echo "$NEW" | grep -Eq '^[0-9]+\.[0-9]+\.[0-9]+$' || {
    echo "error: '$NEW' is not in MAJOR.MINOR.PATCH form" >&2
    exit 1
}

SCRIPT_DIR=$(cd "$(dirname "$0")" && pwd)
ROOT=$(dirname "$SCRIPT_DIR")
cd "$ROOT"

CURRENT=$(grep '^version' reef.toml | head -1 | sed 's/.*"\([^"]*\)".*/\1/')
if [ -z "$CURRENT" ]; then
    echo "error: could not read current version from reef.toml" >&2
    exit 1
fi

if [ "$CURRENT" = "$NEW" ]; then
    echo "error: version is already $NEW" >&2
    exit 1
fi

echo "zyginit: bumping $CURRENT -> $NEW"

# 1. Root reef.toml — sed in place. Match only the first 'version = "..."'
#    in the [package] table (top of file).
# $NEW is safe inside the substitution: the semver regex above guarantees
# digits + dots only — no '/' or '&' to misinterpret.
echo "  rewriting reef.toml"
sed -i "0,/^version = \"[^\"]*\"/s//version = \"$NEW\"/" reef.toml

# 2. tools/zygctl/reef.toml
# $NEW is safe inside the substitution: the semver regex above guarantees
# digits + dots only — no '/' or '&' to misinterpret.
echo "  rewriting tools/zygctl/reef.toml"
sed -i "0,/^version = \"[^\"]*\"/s//version = \"$NEW\"/" tools/zygctl/reef.toml

# 3. src/version.reef — full regenerate.
echo "  regenerating src/version.reef"
gen_reef_module zyginit src/version.reef "$NEW"

# 4. tools/zygctl/src/version.reef — full regenerate.
echo "  regenerating tools/zygctl/src/version.reef"
gen_reef_module zygctl tools/zygctl/src/version.reef "$NEW"

# 5. tools/sysv-wrapper/version.h — full regenerate.
echo "  regenerating tools/sysv-wrapper/version.h"
gen_c_header tools/sysv-wrapper/version.h "$NEW"

echo
echo "summary of changes:"
hg diff --stat || true
echo
echo "review with 'hg diff' and commit:"
echo "  hg ci -m 'Bump version to $NEW'"