resource "aws_s3_bucket" "web" {
  bucket = local.web_bucket_name

  tags = {
    Purpose = "seahaven-ap-spa"
  }

  lifecycle {
    prevent_destroy = true
  }
}

resource "aws_s3_bucket_public_access_block" "web" {
  bucket = aws_s3_bucket.web.id

  block_public_acls       = true
  block_public_policy     = true
  ignore_public_acls      = true
  restrict_public_buckets = true
}

resource "aws_s3_bucket_ownership_controls" "web" {
  bucket = aws_s3_bucket.web.id

  rule {
    object_ownership = "BucketOwnerEnforced"
  }
}

resource "aws_s3_bucket_server_side_encryption_configuration" "web" {
  bucket = aws_s3_bucket.web.id

  rule {
    apply_server_side_encryption_by_default {
      sse_algorithm = "AES256"
    }
  }
}

resource "aws_s3_bucket_versioning" "web" {
  bucket = aws_s3_bucket.web.id

  versioning_configuration {
    status = "Enabled"
  }
}

data "aws_iam_policy_document" "web" {
  statement {
    sid    = "DenyInsecureTransport"
    effect = "Deny"

    principals {
      type        = "*"
      identifiers = ["*"]
    }

    actions = ["s3:*"]
    resources = [
      aws_s3_bucket.web.arn,
      "${aws_s3_bucket.web.arn}/*",
    ]

    condition {
      test     = "Bool"
      variable = "aws:SecureTransport"
      values   = ["false"]
    }
  }

  statement {
    sid    = "AllowCloudFrontOacRead"
    effect = "Allow"

    principals {
      type        = "Service"
      identifiers = ["cloudfront.amazonaws.com"]
    }

    actions   = ["s3:GetObject"]
    resources = ["${aws_s3_bucket.web.arn}/*"]

    condition {
      test     = "StringEquals"
      variable = "AWS:SourceArn"
      values   = [aws_cloudfront_distribution.web.arn]
    }
  }
}

resource "aws_s3_bucket_policy" "web" {
  bucket = aws_s3_bucket.web.id
  policy = data.aws_iam_policy_document.web.json

  depends_on = [aws_s3_bucket_public_access_block.web]
}