Initial commit

commands/commit-error-handling/.scripts/state-analyzer.sh

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+#!/usr/bin/env bash
+# ================================================================
+# Script: state-analyzer.sh
+# Purpose: Analyze repository state (HEAD, branch, remote status)
+# Version: 1.0.0
+# Usage: ./state-analyzer.sh
+# Returns: JSON with repository state information
+# Exit Codes:
+#   0 = Success
+#   1 = Not a git repository
+#   2 = Script error
+# ================================================================
+
+set -euo pipefail
+
+# Function to check HEAD state
+check_head_state() {
+    if git symbolic-ref HEAD &>/dev/null; then
+        echo "attached"
+    else
+        echo "detached"
+    fi
+}
+
+# Function to get current branch
+get_current_branch() {
+    local branch
+    branch=$(git branch --show-current 2>/dev/null)
+
+    if [ -z "$branch" ]; then
+        echo "null"
+    else
+        echo "\"$branch\""
+    fi
+}
+
+# Function to get current commit SHA
+get_current_commit() {
+    git rev-parse --short HEAD 2>/dev/null || echo "unknown"
+}
+
+# Function to check remote status
+check_remote_status() {
+    # Check if remote exists
+    if ! git remote &>/dev/null || [ -z "$(git remote)" ]; then
+        echo "no_remote"
+        return
+    fi
+
+    # Check if branch tracks remote
+    if ! git rev-parse --abbrev-ref @{upstream} &>/dev/null; then
+        echo "no_upstream"
+        return
+    fi
+
+    # Compare with upstream
+    local local_commit remote_commit
+    local_commit=$(git rev-parse HEAD 2>/dev/null)
+    remote_commit=$(git rev-parse @{upstream} 2>/dev/null)
+
+    if [ "$local_commit" = "$remote_commit" ]; then
+        echo "up_to_date"
+    else
+        # Check ahead/behind
+        local ahead behind
+        ahead=$(git rev-list --count @{upstream}..HEAD 2>/dev/null || echo "0")
+        behind=$(git rev-list --count HEAD..@{upstream} 2>/dev/null || echo "0")
+
+        if [ "$ahead" -gt 0 ] && [ "$behind" -gt 0 ]; then
+            echo "diverged"
+        elif [ "$ahead" -gt 0 ]; then
+            echo "ahead"
+        elif [ "$behind" -gt 0 ]; then
+            echo "behind"
+        else
+            echo "up_to_date"
+        fi
+    fi
+}
+
+# Function to get ahead/behind counts
+get_ahead_behind_counts() {
+    if ! git rev-parse --abbrev-ref @{upstream} &>/dev/null; then
+        echo "0" "0"
+        return
+    fi
+
+    local ahead behind
+    ahead=$(git rev-list --count @{upstream}..HEAD 2>/dev/null || echo "0")
+    behind=$(git rev-list --count HEAD..@{upstream} 2>/dev/null || echo "0")
+
+    echo "$ahead" "$behind"
+}
+
+# Function to get remote name
+get_remote_name() {
+    local remote
+    remote=$(git remote 2>/dev/null | head -1)
+
+    if [ -z "$remote" ]; then
+        echo "null"
+    else
+        echo "\"$remote\""
+    fi
+}
+
+# Function to get remote URL
+get_remote_url() {
+    local remote_name
+    remote_name=$(git remote 2>/dev/null | head -1)
+
+    if [ -z "$remote_name" ]; then
+        echo "null"
+        return
+    fi
+
+    local url
+    url=$(git remote get-url "$remote_name" 2>/dev/null)
+
+    if [ -z "$url" ]; then
+        echo "null"
+    else
+        echo "\"$url\""
+    fi
+}
+
+# Function to check if working tree is clean
+check_working_tree() {
+    if git diff-index --quiet HEAD -- 2>/dev/null; then
+        echo "clean"
+    else
+        echo "dirty"
+    fi
+}
+
+# Main function
+main() {
+    # Verify we're in a git repository
+    if ! git rev-parse --git-dir &>/dev/null; then
+        cat <<EOF
+{
+  "error": "not a git repository",
+  "is_repo": false
+}
+EOF
+        exit 1
+    fi
+
+    # Collect all state information
+    local head_state current_branch current_commit remote_status
+    local ahead behind remote_name remote_url working_tree
+
+    head_state=$(check_head_state)
+    current_branch=$(get_current_branch)
+    current_commit=$(get_current_commit)
+    remote_status=$(check_remote_status)
+    read -r ahead behind < <(get_ahead_behind_counts)
+    remote_name=$(get_remote_name)
+    remote_url=$(get_remote_url)
+    working_tree=$(check_working_tree)
+
+    # Output JSON
+    cat <<EOF
+{
+  "is_repo": true,
+  "head_state": "$head_state",
+  "current_branch": $current_branch,
+  "current_commit": "$current_commit",
+  "remote_status": "$remote_status",
+  "ahead_by": $ahead,
+  "behind_by": $behind,
+  "remote_name": $remote_name,
+  "remote_url": $remote_url,
+  "working_tree": "$working_tree",
+  "checked_at": "$(date -Iseconds)"
+}
+EOF
+
+    exit 0
+}
+
+# Run main function
+main "$@"