// CS3319 Project 2 — Key-module dependency graph (Graphviz DOT)
// Edges read "A -> B" = A loads B at runtime via importlib load_module()
//   (no utils.py; sibling scripts reuse each other as modules).
// Backbone edges (final stacker -> stage-1 producers) are drawn bold/dark;
//   shared-library fan-in is drawn light to keep the graph readable.
// Verified against the actual load_module() calls in code/ and the project
//   import map. Only KEY modules are shown (see docs/diagrams/README.md).
// Render: dot -Tsvg dependencies.dot -o ../svg/dependencies.svg
digraph cs3319_deps {
    rankdir=TB;
    bgcolor="white";
    fontname="Helvetica";
    labelloc="t";
    fontsize=16;
    label="CS3319 — key-module dependency graph (runtime load_module)";
    node  [fontname="Helvetica", fontsize=11, style="filled,rounded", shape=box, margin="0.12,0.07"];
    edge  [fontname="Helvetica", fontsize=9];

    // ---------- shared libraries (roots everyone depends on) ----------
    subgraph cluster_shared {
        label="Shared libraries (loaded by ~12 scripts each)";
        style="filled,rounded"; color="#dddddd"; fillcolor="#fafafa";
        train_val    [label="train_val_lgcn_ensemble\n(data · split · best_f1)", fillcolor="#fff4e6", color="#d98c00"];
        stack_rank   [label="stack_rank_calibration\n(explicit feats · rank)",   fillcolor="#fff4e6", color="#d98c00"];
    }

    // ---------- stage-1 feature / score builders ----------
    subgraph cluster_stage1 {
        label="Stage-1 feature / score builders";
        style="filled,rounded"; color="#cfe8d8"; fillcolor="#f4fbf6";
        post95        [label="post95_ablation\n(negative evidence)",     fillcolor="#eafaf0", color="#1e8449"];
        gen_post95    [label="generate_post95_submission\n(variants · top-k)", fillcolor="#eafaf0", color="#1e8449"];
        extra         [label="extra_score_sources_ablation\n(content · BPR)",  fillcolor="#eafaf0", color="#1e8449"];
        rw_systematic [label="randomwalk_systematic_ablation\n(7 RW blocks · X_base)", fillcolor="#eafaf0", color="#1e8449"];
        content_rich  [label="content_rich_ablation\n(rich 18-d)",        fillcolor="#eafaf0", color="#1e8449"];
        rw_ensemble   [label="generate_randomwalk_\nensemble_submission (aggregate)", fillcolor="#eafaf0", color="#1e8449"];
    }

    // ---------- final stacker ----------
    high_order [label="high_order_graph_stack\nFINAL STACKER\n259-d LightGBM · rank cutoff", fillcolor="#fdecea", color="#c0392b", penwidth=2];

    // ---------- peripheral / analysis ----------
    subgraph cluster_periph {
        label="Peripheral / analysis";
        style="filled,rounded"; color="#e2e3e5"; fillcolor="#f7f7f9";
        node2vec   [label="node2vec_deepwalk_ablation", fillcolor="#eef0f3", color="#6c757d"];
        error_grp  [label="error_group_calibration",    fillcolor="#eef0f3", color="#6c757d"];
        gen_crich  [label="generate_content_rich_submission", fillcolor="#eef0f3", color="#6c757d"];
    }

    // ---------- backbone: final stacker orchestrates the producers (bold) ----------
    edge [color="#1a1a1a", penwidth=1.8, style=bold];
    high_order -> rw_systematic;
    high_order -> content_rich;
    high_order -> rw_ensemble;
    high_order -> gen_post95;
    high_order -> post95;
    high_order -> extra;
    high_order -> stack_rank  [style=bold, color="#1a1a1a"];

    // ---------- stage-1 inter-dependencies ----------
    edge [color="#3a7d4f", penwidth=1.1, style=solid, constraint=true];
    gen_post95    -> post95;
    extra         -> gen_post95;  extra -> post95;
    rw_systematic -> gen_post95;  rw_systematic -> extra;  rw_systematic -> post95;
    content_rich  -> gen_post95;  content_rich  -> extra;  content_rich  -> post95;
    rw_ensemble   -> rw_systematic; rw_ensemble -> gen_post95; rw_ensemble -> extra; rw_ensemble -> post95;

    // ---------- peripheral ----------
    edge [color="#8a8f98", penwidth=1.0, style=dashed];
    gen_crich -> content_rich;
    node2vec  -> extra; node2vec -> gen_post95; node2vec -> post95;
    error_grp -> extra; error_grp -> gen_post95; error_grp -> post95;

    // ---------- shared-library fan-in (light, low-rank to avoid hairball) ----------
    edge [color="#b0b0b0", penwidth=0.9, style=dotted, arrowhead=vee, constraint=false];
    post95        -> stack_rank; post95        -> train_val;
    gen_post95    -> stack_rank; gen_post95    -> train_val;
    extra         -> stack_rank; extra         -> train_val;
    rw_systematic -> stack_rank; rw_systematic -> train_val;
    content_rich  -> stack_rank; content_rich  -> train_val;
    rw_ensemble   -> stack_rank; rw_ensemble   -> train_val;
    gen_crich     -> stack_rank; gen_crich     -> train_val;
    node2vec      -> stack_rank; node2vec      -> train_val;
    error_grp     -> stack_rank; error_grp     -> train_val;

    // ---------- legend ----------
    subgraph cluster_legend {
        label="Legend"; style="rounded"; color="#cccccc"; fontsize=10;
        l1 [label="bold dark  =  final stacker loads producer", shape=plaintext, fillcolor="white"];
        l2 [label="solid green  =  producer reuses producer", shape=plaintext, fillcolor="white"];
        l3 [label="dotted grey  =  loads shared library", shape=plaintext, fillcolor="white"];
        l1 -> l2 -> l3 [style=invis];
    }
}