#!/bin/bash
# Git/Gitea Helper Functions
# Loads credentials from .env file for automated Git operations

set -euo pipefail

# Load Git credentials from .env file
load_git_credentials() {
    local env_file="${1:-${PROJECT_ROOT:-.}/.env}"
    
    if [ -f "$env_file" ]; then
        # Source Gitea credentials
        export GITEA_URL="${GITEA_URL:-http://192.168.1.121:3000}"
        export GITEA_USERNAME="${GITEA_USERNAME:-pandoramannli}"
        export GITEA_PASSWORD="${GITEA_PASSWORD:-admin123}"
        export GITEA_TOKEN="${GITEA_TOKEN:-}"
        export GITEA_REPO_OWNER="${GITEA_REPO_OWNER:-pandoramannli}"
        export GITEA_REPO_NAME="${GITEA_REPO_NAME:-gitops}"
        export GITEA_REPO_URL="${GITEA_REPO_URL:-http://192.168.1.121:3000/pandoramannli/gitops.git}"
        export GITEA_SSH_URL="${GITEA_SSH_URL:-ssh://git@192.168.1.121:2222/pandoramannli/gitops.git}"
        export GIT_USER_NAME="${GIT_USER_NAME:-Admin}"
        export GIT_USER_EMAIL="${GIT_USER_EMAIL:-admin@hc-stack.local}"
        
        # Override with .env values if present
        set -a
        source <(grep -E "^GITEA_|^GIT_USER_" "$env_file" 2>/dev/null | grep -v "^#" || true)
        set +a
    fi
}

# Get Git remote URL with credentials
get_git_remote_with_auth() {
    load_git_credentials
    
    if [ -n "${GITEA_TOKEN:-}" ]; then
        # Use token authentication (preferred)
        echo "http://oauth2:${GITEA_TOKEN}@${GITEA_URL#http://}/$(echo ${GITEA_REPO_URL} | sed 's|.*://[^/]*/||')"
    else
        # Use username/password authentication
        echo "http://${GITEA_USERNAME}:${GITEA_PASSWORD}@${GITEA_URL#http://}/$(echo ${GITEA_REPO_URL} | sed 's|.*://[^/]*/||')"
    fi
}

# Configure Git with credentials
configure_git_credentials() {
    load_git_credentials
    
    git config user.name "${GIT_USER_NAME}"
    git config user.email "${GIT_USER_EMAIL}"
    
    # Set up credential helper for this repo
    local repo_url="${GITEA_REPO_URL}"
    if [[ "$repo_url" == http* ]]; then
        if [ -n "${GITEA_TOKEN:-}" ]; then
            # Use token authentication (preferred)
            git remote set-url origin "http://oauth2:${GITEA_TOKEN}@${repo_url#http://}"
        else
            # Use username/password authentication
            git remote set-url origin "http://${GITEA_USERNAME}:${GITEA_PASSWORD}@${repo_url#http://}"
        fi
    fi
}

# Push to Gitea repository
push_to_gitea() {
    local repo_path="${1:-.}"
    local branch="${2:-main}"
    
    load_git_credentials
    configure_git_credentials
    
    cd "$repo_path"
    git add -A
    git commit -m "${3:-Update GitOps manifests}" || true
    git push origin "$branch" 2>&1
}