94 lines
3.5 KiB
Plaintext
94 lines
3.5 KiB
Plaintext
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#!/usr/bin/env bash
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# gstack-repo-mode — detect solo vs collaborative repo mode
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# Usage: source <(gstack-repo-mode) → sets REPO_MODE variable
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# Or: gstack-repo-mode → prints REPO_MODE=... line
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#
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# Detection heuristic (90-day window):
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# Solo: top author >= 80% of commits
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# Collaborative: top author < 80%
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#
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# Override: gstack-config set repo_mode solo|collaborative
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# Cache: ~/.gstack/projects/$SLUG/repo-mode.json (7-day TTL)
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set -euo pipefail
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SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
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# Compute SLUG directly (avoid eval of gstack-slug — branch names can contain shell metacharacters)
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REMOTE_URL=$(git remote get-url origin 2>/dev/null || true)
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if [ -z "$REMOTE_URL" ]; then
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echo "REPO_MODE=unknown"
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exit 0
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fi
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SLUG=$(echo "$REMOTE_URL" | sed 's|.*[:/]\([^/]*/[^/]*\)\.git$|\1|;s|.*[:/]\([^/]*/[^/]*\)$|\1|' | tr '/' '-')
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[ -z "${SLUG:-}" ] && { echo "REPO_MODE=unknown"; exit 0; }
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# Validate: only allow known values (prevent shell injection via source <(...))
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validate_mode() {
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case "$1" in solo|collaborative|unknown) echo "$1" ;; *) echo "unknown" ;; esac
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}
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# Config override takes precedence
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OVERRIDE=$("$SCRIPT_DIR/gstack-config" get repo_mode 2>/dev/null || true)
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if [ -n "$OVERRIDE" ] && [ "$OVERRIDE" != "null" ]; then
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echo "REPO_MODE=$(validate_mode "$OVERRIDE")"
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exit 0
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fi
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# Check cache (7-day TTL)
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CACHE_DIR="$HOME/.gstack/projects/$SLUG"
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CACHE_FILE="$CACHE_DIR/repo-mode.json"
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if [ -f "$CACHE_FILE" ]; then
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CACHE_AGE=$(( $(date +%s) - $(stat -f %m "$CACHE_FILE" 2>/dev/null || stat -c %Y "$CACHE_FILE" 2>/dev/null || echo 0) ))
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if [ "$CACHE_AGE" -lt 604800 ]; then # 7 days in seconds
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MODE=$(grep -o '"mode":"[^"]*"' "$CACHE_FILE" | head -1 | cut -d'"' -f4)
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[ -n "$MODE" ] && echo "REPO_MODE=$(validate_mode "$MODE")" && exit 0
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fi
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fi
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# Compute from git history (90-day window)
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# Use default branch (not HEAD) to avoid feature-branch sampling bias
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DEFAULT_BRANCH=$(git symbolic-ref refs/remotes/origin/HEAD 2>/dev/null | sed 's|refs/remotes/||' || true)
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# Fallback: try origin/main, then origin/master, then HEAD
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if [ -z "$DEFAULT_BRANCH" ]; then
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if git rev-parse --verify origin/main &>/dev/null; then
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DEFAULT_BRANCH="origin/main"
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elif git rev-parse --verify origin/master &>/dev/null; then
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DEFAULT_BRANCH="origin/master"
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else
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DEFAULT_BRANCH="HEAD"
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fi
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fi
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SHORTLOG=$(git shortlog -sn --since="90 days ago" --no-merges "$DEFAULT_BRANCH" 2>/dev/null)
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if [ -z "$SHORTLOG" ]; then
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echo "REPO_MODE=unknown"
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exit 0
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fi
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# Compute TOTAL from ALL authors (not truncated) to avoid solo bias
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TOTAL=$(echo "$SHORTLOG" | awk '{s+=$1} END {print s}')
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TOP=$(echo "$SHORTLOG" | head -1 | awk '{print $1}')
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AUTHORS=$(echo "$SHORTLOG" | wc -l | tr -d ' ')
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# Minimum sample: need at least 5 commits to classify
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if [ "$TOTAL" -lt 5 ]; then
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echo "REPO_MODE=unknown"
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exit 0
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fi
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TOP_PCT=$(( TOP * 100 / TOTAL ))
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# Solo: top author >= 80% of commits (occasional outside PRs don't change mode)
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if [ "$TOP_PCT" -ge 80 ]; then
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MODE=solo
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else
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MODE=collaborative
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fi
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# Cache result atomically (fail silently if ~/.gstack is unwritable)
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mkdir -p "$CACHE_DIR" 2>/dev/null || true
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CACHE_TMP=$(mktemp "$CACHE_DIR/.repo-mode-XXXXXX" 2>/dev/null || true)
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if [ -n "$CACHE_TMP" ]; then
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echo "{\"mode\":\"$MODE\",\"top_pct\":$TOP_PCT,\"authors\":$AUTHORS,\"total\":$TOTAL,\"computed\":\"$(date -u +%Y-%m-%dT%H:%M:%SZ)\"}" > "$CACHE_TMP" 2>/dev/null && mv "$CACHE_TMP" "$CACHE_FILE" 2>/dev/null || rm -f "$CACHE_TMP" 2>/dev/null
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fi
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echo "REPO_MODE=$MODE"
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