digraph aws_architecture {
    rankdir=TB
    node [shape=box, style=rounded, fontname="Helvetica"]
    edge [fontname="Helvetica", fontsize=10]

    labelloc="t"
    label="MPR - AWS Architecture (Lambda + Step Functions)"
    fontsize=16
    fontname="Helvetica-Bold"

    graph [splines=ortho, nodesep=0.8, ranksep=0.8]

    // External
    subgraph cluster_external {
        label="External"
        style=dashed
        color=gray

        browser [label="Browser\nmpr.mcrn.ar", shape=ellipse]
    }

    // Nginx reverse proxy
    subgraph cluster_proxy {
        label="Reverse Proxy"
        style=filled
        fillcolor="#e8f4f8"

        nginx [label="nginx\nport 80"]
    }

    // Application layer
    subgraph cluster_apps {
        label="Application Layer"
        style=filled
        fillcolor="#f0f8e8"

        django [label="Django Admin\n/admin\nport 8701"]
        fastapi [label="GraphQL API\n/graphql\nport 8702"]
        timeline [label="Timeline UI\n/\nport 5173"]
    }

    // Data layer (still local)
    subgraph cluster_data {
        label="Data Layer"
        style=filled
        fillcolor="#f8e8f0"

        postgres [label="PostgreSQL\nport 5436", shape=cylinder]
    }

    // AWS layer
    subgraph cluster_aws {
        label="AWS Cloud"
        style=filled
        fillcolor="#fde8d0"

        step_functions [label="Step Functions\nOrchestration\nstate machine"]
        lambda [label="Lambda Function\nFFmpeg container\ntranscoding"]
        s3 [label="S3 Buckets", shape=folder]
        bucket_in [label="mpr-media-in/\ninput videos", shape=note]
        bucket_out [label="mpr-media-out/\ntranscoded output", shape=note]
    }

    // Connections
    browser -> nginx [label="HTTP"]

    nginx -> django [xlabel="/admin"]
    nginx -> fastapi [xlabel="/graphql"]
    nginx -> timeline [xlabel="/"]

    timeline -> fastapi [label="GraphQL"]
    django -> postgres

    fastapi -> postgres [label="read/write jobs"]
    fastapi -> step_functions [label="boto3\nstart_execution()\nexecution_arn"]

    step_functions -> lambda [label="invoke with\njob parameters"]
    lambda -> s3 [label="download input\nupload output"]
    lambda -> fastapi [label="POST /jobs/{id}/callback\nupdate status"]

    fastapi -> postgres [label="callback updates\njob status"]

    s3 -> bucket_in [style=dotted, arrowhead=none]
    s3 -> bucket_out [style=dotted, arrowhead=none]
}