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https://github.com/garrytan/gstack.git
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Garry Tan
5edf4856ff
Detects whether a repo is solo-dev (one person does 80%+ of recent commits)
or collaborative. Uses 90-day git shortlog window with 7-day cache in
~/.gstack/projects/{SLUG}/repo-mode.json. Config override via
`gstack-config set repo_mode solo|collaborative` takes precedence over
the heuristic. Minimum 5 commits required to classify (otherwise unknown).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
67 lines
2.3 KiB
Bash
Executable File
67 lines
2.3 KiB
Bash
Executable File
#!/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 AND <= 2 distinct authors
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# Collaborative: everything else
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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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eval $("$SCRIPT_DIR/gstack-slug" 2>/dev/null) || { echo "REPO_MODE=unknown"; exit 0; }
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[ -z "${SLUG:-}" ] && { echo "REPO_MODE=unknown"; exit 0; }
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# Config override takes precedence
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OVERRIDE=$("$SCRIPT_DIR/gstack-config" get repo_mode 2>/dev/null || true)
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if [ -n "$OVERRIDE" ] && [ "$OVERRIDE" != "null" ]; then
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echo "REPO_MODE=$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 "$MODE" ] && echo "REPO_MODE=$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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SHORTLOG=$(git shortlog -sn --since="90 days ago" --no-merges HEAD 2>/dev/null | head -20)
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if [ -z "$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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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 (fail silently if ~/.gstack is unwritable)
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mkdir -p "$CACHE_DIR" 2>/dev/null || true
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echo "{\"mode\":\"$MODE\",\"top_pct\":$TOP_PCT,\"authors\":$AUTHORS,\"total\":$TOTAL,\"computed\":\"$(date -u +%Y-%m-%dT%H:%M:%SZ)\"}" > "$CACHE_FILE" 2>/dev/null || true
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echo "REPO_MODE=$MODE"
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