{
  "AWSTemplateFormatVersion" : "2010-09-09",

  "Resources" : {
    "DynamoDBTable" : {
      "Type" : "AWS::DynamoDB::Table",
      "Properties" : {
        "AttributeDefinitions" : [
          {
            "AttributeName" : "Artist",
            "AttributeType" : "S"
          },
          {
            "AttributeName" : "SongTitle",
            "AttributeType" : "S"
          }
        ],
        "KeySchema" : [
          {
            "AttributeName" : "Artist",
            "KeyType" : "HASH"
          },
          {
            "AttributeName" : "SongTitle",
            "KeyType" : "RANGE"
          }
        ],
        "ProvisionedThroughput" : {
          "ReadCapacityUnits" : "5",
          "WriteCapacityUnits" : "5"
        },
        "TableName" : "PrometheonMusic"
        }
    },
    "LambdaExecutionRole": {
      "Type": "AWS::IAM::Role",
      "Properties": {
        "AssumeRolePolicyDocument": {
          "Version": "2012-10-17",
          "Statement": [{
              "Effect": "Allow",
              "Principal": {"Service": ["lambda.amazonaws.com"]},
              "Action": ["sts:AssumeRole"]
          }]
        },
        "Path": "/",
        "Policies": [{
          "PolicyName": "root",
          "PolicyDocument": {
            "Version": "2012-10-17",
            "Statement": [{
                "Effect": "Allow",
                "Action": ["logs:CreateLogGroup","logs:CreateLogStream","logs:PutLogEvents"],
                "Resource": "arn:aws:logs:*:*:*"
            },
            {
                "Effect": "Allow",
                "Action": ["dynamodb:*"],
                "Resource": "arn:aws:dynamodb:*:*:*"
            }]
          }
        }],
        "RoleName": "DynamoDBFullLambdaAccess"
      }
    },
    "ListLambdaFunction": {
      "Type": "AWS::Lambda::Function",
      "Properties" : {
        "Code" : {
          "S3Bucket": "cloudassessments-lab-files",
          "S3Key": "aws/s3/s3_static_site/list.zip"
        },
        "Description" : "The function to list data from DynamoDB",
        "FunctionName" : "list",
        "Handler" : "list.list",
        "Role" : { "Fn::GetAtt" : ["LambdaExecutionRole", "Arn"] },
        "Runtime" : "nodejs8.10"
      },
      "DependsOn" : ["LambdaExecutionRole"]
    },
    "GetLambdaFunction": {
      "Type": "AWS::Lambda::Function",
      "Properties" : {
        "Code" : {
          "S3Bucket": "cloudassessments-lab-files",
          "S3Key": "aws/s3/s3_static_site/get.zip"
        },
        "Description" : "The function to get data from DynamoDB",
        "FunctionName" : "get",
        "Handler" : "get.get",
        "Role" : { "Fn::GetAtt" : ["LambdaExecutionRole", "Arn"] },
        "Runtime" : "nodejs8.10"
      },
      "DependsOn" : ["LambdaExecutionRole"]
    },
    "PrometheonApi": {
      "Type": "AWS::ApiGateway::RestApi",
      "Properties": {
        "Name": "prometheon",
        "Description": "API used for prometheon requests",
        "FailOnWarnings" : true
      }
    },
    "LambdaFunctionPermissionGet": {
      "Type": "AWS::Lambda::Permission",
      "Properties": {
        "Action": "lambda:invokeFunction",
        "FunctionName": {"Fn::GetAtt": ["GetLambdaFunction", "Arn"]},
        "Principal": "apigateway.amazonaws.com",
        "SourceArn": {"Fn::Join": ["",
          ["arn:aws:execute-api:", {"Ref": "AWS::Region"}, ":", {"Ref": "AWS::AccountId"}, ":", {"Ref": "PrometheonApi"}, "/*"]
        ]}
      }
    },
    "LambdaFunctionPermissionList": {
      "Type": "AWS::Lambda::Permission",
      "Properties": {
        "Action": "lambda:invokeFunction",
        "FunctionName": {"Fn::GetAtt": ["ListLambdaFunction", "Arn"]},
        "Principal": "apigateway.amazonaws.com",
        "SourceArn": {"Fn::Join": ["",
          ["arn:aws:execute-api:", {"Ref": "AWS::Region"}, ":", {"Ref": "AWS::AccountId"}, ":", {"Ref": "PrometheonApi"}, "/*"]
        ]}
      }
    },
    "ApiDeployment": {
      "Type": "AWS::ApiGateway::Deployment",
      "DependsOn": [
        "ApiMethodList",
        "ApiMethodGet"
      ],
      "Properties": {
        "RestApiId": {"Ref": "PrometheonApi"},
        "StageName": "dev"
      }
    },
    "PrometheonApiResourceRoot": {
      "Type": "AWS::ApiGateway::Resource",
      "Properties": {
        "RestApiId": {"Ref": "PrometheonApi"},
        "ParentId": {"Fn::GetAtt": ["PrometheonApi", "RootResourceId"]},
        "PathPart": "prometheon"
      }
    },
    "PrometheonApiResourceId": {
      "DependsOn": "PrometheonApiResourceRoot",
      "Type": "AWS::ApiGateway::Resource",
      "Properties": {
        "RestApiId": {"Ref": "PrometheonApi"},
        "ParentId": { "Ref": "PrometheonApiResourceRoot"},
        "PathPart": "id"
      }
    },
    "ApiMethodList": {
      "DependsOn": "LambdaFunctionPermissionList",
      "Type": "AWS::ApiGateway::Method",
      "Properties": {
        "ResourceId": {"Ref": "PrometheonApiResourceRoot"},
        "RestApiId": {"Ref": "PrometheonApi"},
        "HttpMethod": "GET",
        "AuthorizationType": "NONE",
        "Integration": {
          "Type": "AWS_PROXY",
          "IntegrationHttpMethod": "POST",
          "Uri": {"Fn::Join" : ["",
            [
              "arn:aws:apigateway:", 
              {"Ref": "AWS::Region"}, 
              ":lambda:path/2015-03-31/functions/", 
              {"Fn::GetAtt": ["ListLambdaFunction", "Arn"]}, 
              "/invocations"
            ]
          ]}
        }
      }
    },
    "ApiMethodGet": {
      "DependsOn": "LambdaFunctionPermissionGet",
      "Type": "AWS::ApiGateway::Method",
      "Properties": {
        "ResourceId": {"Ref": "PrometheonApiResourceId"},
        "RestApiId": {"Ref": "PrometheonApi"},
        "HttpMethod": "GET",
        "AuthorizationType": "NONE",
        "Integration": {
          "Type": "AWS_PROXY",
          "IntegrationHttpMethod": "POST",
          "Uri": {"Fn::Join" : ["",
            [
              "arn:aws:apigateway:", 
              {"Ref": "AWS::Region"}, 
              ":lambda:path/2015-03-31/functions/", 
              {"Fn::GetAtt": ["GetLambdaFunction", "Arn"]}, 
              "/invocations"
            ]
          ]}
        }
      }
    }
  }
}