Add bump_version script

bump_version

@@ -0,0 +1,189 @@
+#!/usr/bin/env bash
+
+# bump_version - increase the shared version and generate changelogs
+
+set -o errexit
+set -o pipefail
+
+usage() {
+    echo -e "bump_version - increase the shared version and generate changelogs"
+    echo -e ""
+    echo -e "Usage:"
+    echo -e " $ bump_version [-b/--web-branch <web_branch>] <new_version>"
+    echo -e ""
+    echo -e "The web_branch defaults to the same branch name as the current main branch."
+    echo -e "This helps facilitate releases where both branches would be called release-X.Y.Z"
+    echo -e "and would already be created before running this script."
+}
+
+if [[ -z $1 ]]; then
+    usage
+    exit 1
+fi
+
+shared_version_file="./SharedVersion.cs"
+
+# Parse branch option
+if [[ $1 == '-b' || $1 == '--web-branch' ]]; then
+	web_branch="$2"
+	shift 2
+else
+    web_branch="$( git branch 2>/dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/\1/' )"
+fi
+
+# Initialize submodules
+git submodule update --init --recursive
+
+# configure branch
+pushd MediaBrowser.WebDashboard/jellyfin-web
+git fetch --all
+git checkout origin/${web_branch} || {
+    echo "jellyfin-web branch ${web_branch} is invalid."
+    exit 1
+}
+popd
+
+new_version="$1"
+
+# Parse the version from the AssemblyVersion
+old_version="$(
+    grep "AssemblyVersion" ${shared_version_file} \
+        | sed -E 's/\[assembly: ?AssemblyVersion\("([0-9\.]+)"\)\]/\1/' \
+        | sed -E 's/.0$//'
+)"
+
+# Set the shared version to the specified new_version
+old_version_sed="$( sed 's/\./\\./g' <<<"${old_version}" )" # Escape the '.' chars
+sed -i "s/${old_version_sed}/${new_version}/g" ${shared_version_file}
+
+declare -a pr_merges_since_last_master
+declare changelog_string_github
+declare changelog_string_deb
+declare changelog_string_yum
+
+# Build up a changelog from merge commits
+for repo in ./ MediaBrowser.WebDashboard/jellyfin-web/; do
+    last_master_merge_commit=""
+    pr_merges_since_last_master=()
+    git_show_details=""
+    pull_request_id=""
+    pull_request_description=""
+    changelog_strings_repo_github=""
+    changelog_strings_repo_deb=""
+    changelog_strings_repo_yum=""
+
+    case $repo in
+        *jellyfin-web*)
+            repo_name="jellyfin-web"
+        ;;
+        *)
+            repo_name="jellyfin"
+        ;;
+    esac
+
+    pushd ${repo}
+
+    # Find the last release commit, so we know what's happened since
+    last_master_branch="master-${old_version}" # TODO: Set to `release-` for next release, so we can properly parse both repos with the new branch standard
+    last_master_merge_commit="$(
+        git log --merges --pretty=oneline \
+            | grep -F "${last_master_branch}" \
+            | awk '{ print $1 }' \
+            || true # Don't die here with errexit
+    )"
+    if [[ -z ${last_master_merge_commit} ]]; then
+        # This repo has no last proper commit, so just skip it
+        popd
+        continue
+    fi
+    # Get all the PR merge commits since the last master merge commit in `jellyfin`
+    pr_merges_since_last_master+=( $(
+        git log --merges --pretty=oneline ${last_master_merge_commit}..HEAD \
+            | grep -F "Merge pull request" \
+            | awk '{ print $1 }'
+    ) )
+
+    for commit_hash in ${pr_merges_since_last_master[@]}; do
+        git_show_details="$( git show ${commit_hash} )"
+        pull_request_id="$(
+            awk '
+                /Merge pull request/{ print $4 }
+                { next }
+            ' <<<"${git_show_details}"
+        )"
+        pull_request_description="$(
+            awk '
+                /^[a-zA-Z]/{ next }
+                /^    Merge/{ next }
+                /^$/{ next }
+                { print $0 }
+            ' <<<"${git_show_details}"
+        )"
+        pull_request_description="$( sed ':a;N;$!ba;s/\n//g; s/  \+//g' <<<"${pull_request_description}" )"
+        changelog_strings_repo_github="${changelog_strings_repo_github}\n* ${pull_request_id}: ${pull_request_description}"
+        changelog_strings_repo_deb="${changelog_strings_repo_deb}\n  * $( sed 's/#/PR/' <<<"${pull_request_id}" ) ${pull_request_description}"
+        changelog_strings_repo_yum="${changelog_strings_repo_yum}\n- $( sed 's/#/PR/' <<<"${pull_request_id}" ) ${pull_request_description}"
+    done
+
+    changelog_string_github="${changelog_string_github}\n#### ${repo_name}:\n$( echo -e "${changelog_strings_repo_github}" | sort -nk2 )\n"
+    changelog_string_deb="${changelog_string_deb}\n  * ${repo_name}:$( echo -e "${changelog_strings_repo_deb}" | sort -nk2 )"
+    changelog_string_yum="${changelog_string_yum}\n- ${repo_name}:$( echo -e "${changelog_strings_repo_yum}" | sort -nk2 )"
+
+    popd
+done
+
+# Write out a temporary Debian changelog with our new stuff appended and some templated formatting
+debian_changelog_file="deployment/debian-package-x64/pkg-src/changelog"
+debian_changelog_temp="$( mktemp )"
+# Create new temp file with our changelog
+echo -e "### DEBIAN PACKAGE CHANGELOG: Verify this file looks correct or edit accordingly, then delete this line, write, and exit.
+jellyfin (${new_version}-1) unstable; urgency=medium
+${changelog_string_deb}
+
+-- Jellyfin Packaging Team <packaging@jellyfin.org>  $( date --rfc-2822 )
+" >> ${debian_changelog_temp}
+cat ${debian_changelog_file} >> ${debian_changelog_temp}
+# Edit the file to verify
+$EDITOR ${debian_changelog_temp}
+# Move into place
+mv ${debian_changelog_temp} ${debian_changelog_file}
+# Clean up
+rm -f ${debian_changelog_temp}
+
+# Write out a temporary Yum changelog with our new stuff prepended and some templated formatting
+fedora_spec_file="deployment/fedora-package-x64/pkg-src/jellyfin.spec"
+fedora_changelog_temp="$( mktemp )"
+fedora_spec_temp_dir="$( mktemp -d )"
+fedora_spec_temp="${fedora_spec_temp_dir}/jellyfin.spec.tmp"
+# Make a copy of our spec file for hacking
+cp ${fedora_spec_file} ${fedora_spec_temp_dir}/
+pushd ${fedora_spec_temp_dir}
+# Split out the stuff before and after changelog
+csplit jellyfin.spec  "/^%changelog/" # produces xx00 xx01
+# Update the version in xx00
+sed -i "s/${old_version_sed}/${new_version}/g" xx00
+# Remove the header from xx01
+sed -i '/^%changelog/d' xx01
+# Create new temp file with our changelog
+echo -e "### YUM SPEC CHANGELOG: Verify this file looks correct or edit accordingly, then delete this line, write, and exit.
+%changelog
+* $( date '+%a %b %d %Y' ) Jellyfin Packaging Team <packaging@jellyfin.org>${changelog_string_yum}" >> ${fedora_changelog_temp}
+cat xx01 >> ${fedora_changelog_temp}
+# Edit the file to verify
+$EDITOR ${fedora_changelog_temp}
+# Reassembble
+cat xx00 ${fedora_changelog_temp} > ${fedora_spec_temp}
+popd
+# Move into place
+mv ${fedora_spec_temp} ${fedora_spec_file}
+# Clean up
+rm -rf ${fedora_changelog_temp} ${fedora_spec_temp_dir}
+
+# Stage the changed files for commit
+git add ${shared_version_file} ${debian_changelog_file} ${fedora_spec_file}
+git status
+
+# Write out the GitHub-formatted changelog for the merge request/release pages
+echo ""
+echo "=== The GitHub-formatted changelog follows ==="
+echo -e "${changelog_string_github}"