#!/bin/bash

# Initializes a git repository and pushes to a remote using credentials from arguments
#
# Usage: ./git-init-from-config.sh <git-url> <git-user> <git-token>
#
# Arguments:
#   git-url    - Repository URL (e.g., https://gitea.example.com/user/repo.git)
#   git-user   - Git username
#   git-token  - Git token or password
#
# The branch name will be read from the VERSION file (first line)

set -e

if [ "$#" -lt 3 ]; then
    echo "Usage: $0 <git-url> <git-user> <git-token>"
    echo ""
    echo "Arguments:"
    echo "  git-url    - Repository URL (e.g., https://gitea.example.com/user/repo.git)"
    echo "  git-user   - Git username"
    echo "  git-token  - Git token or password"
    exit 1
fi

GIT_URL="$1"
GIT_USER="$2"
GIT_TOKEN="$3"

if [ -z "$GIT_URL" ]; then
    echo "Error: git-url is required"
    exit 1
fi

if [ -z "$GIT_USER" ]; then
    echo "Error: git-user is required"
    exit 1
fi

if [ -z "$GIT_TOKEN" ]; then
    echo "Error: git-token is required"
    exit 1
fi

if [ ! -f "VERSION" ]; then
    echo "Error: VERSION file not found in current directory"
    exit 1
fi

GIT_BRANCH=$(head -n 1 VERSION | tr -d '[:space:]')

if [ -z "$GIT_BRANCH" ]; then
    echo "Error: VERSION file is empty"
    exit 1
fi

echo "Version detected: $GIT_BRANCH"

if [[ "$GIT_URL" == https://* ]]; then
    URL_WITHOUT_PROTOCOL="${GIT_URL#https://}"
    AUTH_URL="https://${GIT_USER}:${GIT_TOKEN}@${URL_WITHOUT_PROTOCOL}"
elif [[ "$GIT_URL" == http://* ]]; then
    URL_WITHOUT_PROTOCOL="${GIT_URL#http://}"
    AUTH_URL="http://${GIT_USER}:${GIT_TOKEN}@${URL_WITHOUT_PROTOCOL}"
else
    echo "Error: URL must start with http:// or https://"
    exit 1
fi

echo "Configuring Git for large files..."
# Increase HTTP post buffer to handle large files (500MB)
git config --global http.postBuffer 524288000
# Optimize compression for large files
git config --global core.compression 9
# Increase timeout for long operations (30 minutes)
git config --global http.lowSpeedLimit 0
git config --global http.lowSpeedTime 1800

echo "Initializing git repository..."
git init

echo "Adding all files (this may take a while for large files)..."
git add -A
TOTAL_FILES=$(git ls-files | wc -l)
TOTAL_SIZE=$(du -sh . | cut -f1)
echo "Added $TOTAL_FILES files (total size: $TOTAL_SIZE)"

echo "Creating initial commit..."
git commit -m "Initial commit" || echo "Nothing to commit or already committed"

echo "Setting branch to $GIT_BRANCH..."
git branch -M "$GIT_BRANCH"

echo "Adding remote origin..."
git remote remove origin 2>/dev/null || true
git remote add origin "$AUTH_URL"

echo "Pushing to remote (this may take a while for large files)..."
# Use progress flag to show upload progress
git push --progress -u origin "$GIT_BRANCH" 2>&1 | while IFS= read -r line; do
    echo "$line"
    # Show progress indicators
    if [[ "$line" =~ (Counting|Compressing|Writing|remote:) ]]; then
        echo "$line"
    fi
done

echo ""
echo "Done! Repository pushed to $GIT_URL on branch $GIT_BRANCH"