From 10ee3c40db65039a32fc682ce0ee79bed203c2ff Mon Sep 17 00:00:00 2001
From: Jan-Marlon Leibl <jleibl@proton.me>
Date: Wed, 7 May 2025 11:16:57 +0000
Subject: [PATCH] Add pre-receive.sh

---
 pre-receive.sh | 122 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 122 insertions(+)
 create mode 100644 pre-receive.sh

diff --git a/pre-receive.sh b/pre-receive.sh
new file mode 100644
index 0000000..1982dec
--- /dev/null
+++ b/pre-receive.sh
@@ -0,0 +1,122 @@
+#!/bin/bash
+
+# Semantic commit pattern
+PATTERN='^(feat|fix|docs|style|refactor|test|perf|build|ci|chore|revert)(\([a-zA-Z0-9\._-]+\))?: .{1,}$'
+
+# Pattern for merge commits from pull requests
+PR_MERGE_PATTERN='^Merge pull request'
+
+# Pattern for standard Git merge commits
+GIT_MERGE_PATTERN='^Merge (branch|remote-tracking branch) .+ into .+$'
+
+# Set text colors
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[0;33m'
+BLUE='\033[0;34m'
+BOLD='\033[1m'
+NC='\033[0m' # No Color
+
+# Statistics tracking
+INVALID_COMMITS=0
+VALID_COMMITS=0
+MERGE_COMMITS=0
+TOTAL_COMMITS=0
+
+# Draw box for statistics
+draw_box() {
+    local title="$1"
+    local width=60
+    local padding=$(((width - ${#title}) / 2))
+
+    echo -e "${BOLD}┌$(printf '─%.0s' $(seq 1 $width))┐${NC}"
+    echo -e "${BOLD}│$(printf ' %.0s' $(seq 1 $padding))$title$(printf ' %.0s' $(seq 1 $((width - padding - ${#title}))))│${NC}"
+    echo -e "${BOLD}└$(printf '─%.0s' $(seq 1 $width))┘${NC}"
+}
+
+# Read stdin (format: <old-value> <new-value> <ref-name>)
+while read -r OLD_REV NEW_REV REF_NAME; do
+    # Skip if it's a branch deletion
+    if [[ "$NEW_REV" = "0000000000000000000000000000000000000000" ]]; then
+        continue
+    fi
+
+    # Handle new branch pushes differently
+    if [[ "$OLD_REV" = "0000000000000000000000000000000000000000" ]]; then
+        continue
+    fi
+
+    echo -e "${YELLOW}Checking commits in $REF_NAME${NC}"
+
+    # Get branch stats from git (quietly)
+    BRANCH_COMMITS=$(git rev-list --count "$REF_NAME" 2>/dev/null || echo "?")
+    BRANCH_AGE=$(git log -1 --format="%cr" "$REF_NAME" 2>/dev/null || echo "unknown time ago")
+
+    # Get all commit hashes between old and new revision
+    COMMITS=$(git rev-list "$OLD_REV".."$NEW_REV")
+
+    # Count how many commits we're validating
+    COMMITS_TO_CHECK=$(echo "$COMMITS" | wc -l)
+    if [ "$COMMITS_TO_CHECK" -eq 0 ]; then
+        echo -e "${GREEN}No new commits to validate${NC}"
+        continue
+    else
+        echo -e "${BLUE}Validating $COMMITS_TO_CHECK commit(s)${NC}"
+    fi
+
+    # Process each commit message silently
+    for COMMIT in $COMMITS; do
+        TOTAL_COMMITS=$((TOTAL_COMMITS + 1))
+        COMMIT_MSG=$(git log --format=%B -n 1 "$COMMIT")
+        COMMIT_SUBJECT=$(echo "$COMMIT_MSG" | head -n 1)
+        PARENT_COUNT=$(git rev-list --parents -n 1 "$COMMIT" | awk '{print NF - 1}')
+
+        # Process merge commits or regular commits
+        if [[ $PARENT_COUNT -gt 1 ]] && (echo "$COMMIT_SUBJECT" | grep -E "$PR_MERGE_PATTERN" >/dev/null || echo "$COMMIT_SUBJECT" | grep -E "$GIT_MERGE_PATTERN" >/dev/null); then
+            MERGE_COMMITS=$((MERGE_COMMITS + 1))
+            continue
+        fi
+
+        # Validate commit message silently
+        if ! [[ "$COMMIT_SUBJECT" =~ $PATTERN ]]; then
+            INVALID_COMMITS=$((INVALID_COMMITS + 1))
+        else
+            VALID_COMMITS=$((VALID_COMMITS + 1))
+        fi
+    done
+
+    # Display only the commit statistics box
+    draw_box "COMMIT STATISTICS"
+    echo -e "${BOLD}Branch information:${NC} $BRANCH_COMMITS total commits (created $BRANCH_AGE)"
+    echo -e "${BOLD}Commits validated:${NC} $TOTAL_COMMITS"
+    echo -e "${GREEN}Valid semantic commits:   ${NC} $VALID_COMMITS"
+    echo -e "${BLUE}Merge commits:           ${NC} $MERGE_COMMITS"
+    echo -e "${RED}Invalid commits:         ${NC} $INVALID_COMMITS"
+    echo ""
+
+    if [ $TOTAL_COMMITS -gt 0 ]; then
+        VALID_PERCENT=$(((VALID_COMMITS + MERGE_COMMITS) * 100 / TOTAL_COMMITS))
+        echo -e "${BOLD}Semantic compliance:${NC} $VALID_PERCENT%"
+
+        # Print bar
+        printf "["
+        for ((i = 0; i < VALID_PERCENT / 5; i++)); do
+            printf "${GREEN}#${NC}"
+        done
+        for ((i = VALID_PERCENT / 5; i < 20; i++)); do
+            printf "${RED}.${NC}"
+        done
+        printf "] $VALID_PERCENT%%\n"
+        echo ""
+    fi
+done
+
+# If any commits were invalid, reject the push
+if [[ $INVALID_COMMITS -gt 0 ]]; then
+    echo -e "${RED}Push rejected: $INVALID_COMMITS commit(s) have invalid messages.${NC}"
+    echo -e "${YELLOW}Please rewrite your commit messages to follow the semantic commit format:${NC}"
+    echo "type(scope): message"
+    exit 1
+fi
+
+exit 0
\ No newline at end of file