Add wire-server version pinning with dropdown selection

.github/scripts/lib/common.sh

@@ -0,0 +1,174 @@
+#!/usr/bin/env bash
+# Common utilities for wire-builds automation scripts
+
+set -euo pipefail
+
+# Colors for output
+readonly COLOR_RESET='\033[0m'
+readonly COLOR_GREEN='\033[0;32m'
+readonly COLOR_YELLOW='\033[0;33m'
+readonly COLOR_RED='\033[0;31m'
+readonly COLOR_BLUE='\033[0;34m'
+
+# Logging functions
+log_info() {
+    echo -e "${COLOR_BLUE}ℹ${COLOR_RESET} $*"
+}
+
+log_success() {
+    echo -e "${COLOR_GREEN}✓${COLOR_RESET} $*"
+}
+
+log_warning() {
+    echo -e "${COLOR_YELLOW}⚠${COLOR_RESET} $*"
+}
+
+log_error() {
+    echo -e "${COLOR_RED}✗${COLOR_RESET} $*" >&2
+}
+
+# Exit with error message
+die() {
+    log_error "$*"
+    exit 1
+}
+
+# Check if command exists
+require_command() {
+    local cmd="$1"
+    if ! command -v "$cmd" &> /dev/null; then
+        die "Required command not found: $cmd"
+    fi
+}
+
+# Retry with exponential backoff
+retry_with_backoff() {
+    local max_attempts="$1"
+    local delay="$2"
+    local command="${@:3}"
+    local attempt=1
+
+    while [ $attempt -le "$max_attempts" ]; do
+        if eval "$command"; then
+            return 0
+        fi
+
+        if [ $attempt -lt "$max_attempts" ]; then
+            log_warning "Attempt $attempt/$max_attempts failed, retrying in ${delay}s..."
+            sleep "$delay"
+            delay=$((delay * 2))
+        fi
+        attempt=$((attempt + 1))
+    done
+
+    log_error "All $max_attempts attempts failed"
+    return 1
+}
+
+# JSON utilities using jq
+json_get() {
+    local file="$1"
+    local query="$2"
+    jq -r "$query" "$file"
+}
+
+json_set() {
+    local file="$1"
+    local query="$2"
+    jq "$query" "$file" > "$file.tmp" && mv "$file.tmp" "$file"
+}
+
+# GitHub API utilities
+github_api_get() {
+    local endpoint="$1"
+    local url="https://api.github.com${endpoint}"
+    curl -sf "$url" || return 1
+}
+
+# Get commit SHA from wire-server release tag
+get_commit_from_release() {
+    local version="$1"
+    local tag_ref
+    local tag_sha
+    local tag_type
+    local commit_sha
+
+    tag_ref=$(github_api_get "/repos/wireapp/wire-server/git/refs/tags/chart/$version") || return 1
+
+    tag_sha=$(echo "$tag_ref" | jq -r '.object.sha')
+    tag_type=$(echo "$tag_ref" | jq -r '.object.type')
+
+    if [ "$tag_type" = "tag" ]; then
+        # Annotated tag - dereference to get commit
+        local tag_obj
+        tag_obj=$(github_api_get "/repos/wireapp/wire-server/git/tags/$tag_sha") || return 1
+        commit_sha=$(echo "$tag_obj" | jq -r '.object.sha')
+    else
+        # Lightweight tag or direct commit
+        commit_sha="$tag_sha"
+    fi
+
+    echo "$commit_sha"
+}
+
+# Download file with retry
+download_with_retry() {
+    local url="$1"
+    local output="$2"
+    local max_retries="${3:-5}"
+    local delay="${4:-3}"
+
+    retry_with_backoff "$max_retries" "$delay" "curl -sf '$url' > '$output' 2>/dev/null"
+}
+
+# Git configuration
+git_config_bot() {
+    local name="${1:-github-actions[bot]}"
+    local email="${2:-github-actions[bot]@users.noreply.github.com}"
+    git config user.name "$name"
+    git config user.email "$email"
+}
+
+# Extract SHA from wire-builds URL
+extract_sha_from_url() {
+    local url="$1"
+    # Use sed for macOS compatibility (BSD grep doesn't support -P)
+    echo "$url" | sed -n 's/.*wire-builds\/\([^/]*\).*/\1/p' | head -1 | tr -d '\n\r' || echo ""
+}
+
+# Compare two build.json files and generate changelog
+generate_changelog() {
+    local old_build="$1"
+    local new_build="$2"
+
+    # Extract wire-server version
+    local ws_version
+    ws_version=$(json_get "$new_build" '.helmCharts["wire-server"].version // "N/A"')
+    echo "## Wire Server: $ws_version"
+    echo ""
+
+    # Find changed charts
+    local changes
+    changes=$(jq -r --slurpfile old "$old_build" '
+        [.helmCharts | to_entries[] |
+         select($old[0].helmCharts[.key] != null and
+                (($old[0].helmCharts[.key].version // "") != .value.version or
+                 ($old[0].helmCharts[.key].meta.commit // "") != .value.meta.commit)) |
+         "- " + .key + ": " + $old[0].helmCharts[.key].version + " → " + .value.version
+        ] | join("\n")
+    ' "$new_build")
+
+    if [ -n "$changes" ]; then
+        echo "## Changed Charts"
+        echo "$changes"
+    else
+        echo "No chart version changes"
+    fi
+}
+
+# Ensure required commands are available
+check_prerequisites() {
+    require_command jq
+    require_command curl
+    require_command git
+}