nixos/shared/linked-dotfiles/opencode/skills/create-skill/references/graphviz-conventions.dot

digraph STYLE_GUIDE {
    // The style guide for our process DSL, written in the DSL itself

    // Node type examples with their shapes
    subgraph cluster_node_types {
        label="NODE TYPES AND SHAPES";

        // Questions are diamonds
        "Is this a question?" [shape=diamond];

        // Actions are boxes (default)
        "Take an action" [shape=box];

        // Commands are plaintext
        "git commit -m 'msg'" [shape=plaintext];

        // States are ellipses
        "Current state" [shape=ellipse];

        // Warnings are octagons
        "STOP: Critical warning" [shape=octagon, style=filled, fillcolor=red, fontcolor=white];

        // Entry/exit are double circles
        "Process starts" [shape=doublecircle];
        "Process complete" [shape=doublecircle];

        // Examples of each
        "Is test passing?" [shape=diamond];
        "Write test first" [shape=box];
        "npm test" [shape=plaintext];
        "I am stuck" [shape=ellipse];
        "NEVER use git add -A" [shape=octagon, style=filled, fillcolor=red, fontcolor=white];
    }

    // Edge naming conventions
    subgraph cluster_edge_types {
        label="EDGE LABELS";

        "Binary decision?" [shape=diamond];
        "Yes path" [shape=box];
        "No path" [shape=box];

        "Binary decision?" -> "Yes path" [label="yes"];
        "Binary decision?" -> "No path" [label="no"];

        "Multiple choice?" [shape=diamond];
        "Option A" [shape=box];
        "Option B" [shape=box];
        "Option C" [shape=box];

        "Multiple choice?" -> "Option A" [label="condition A"];
        "Multiple choice?" -> "Option B" [label="condition B"];
        "Multiple choice?" -> "Option C" [label="otherwise"];

        "Process A done" [shape=doublecircle];
        "Process B starts" [shape=doublecircle];

        "Process A done" -> "Process B starts" [label="triggers", style=dotted];
    }

    // Naming patterns
    subgraph cluster_naming_patterns {
        label="NAMING PATTERNS";

        // Questions end with ?
        "Should I do X?";
        "Can this be Y?";
        "Is Z true?";
        "Have I done W?";

        // Actions start with verb
        "Write the test";
        "Search for patterns";
        "Commit changes";
        "Ask for help";

        // Commands are literal
        "grep -r 'pattern' .";
        "git status";
        "npm run build";

        // States describe situation
        "Test is failing";
        "Build complete";
        "Stuck on error";
    }

    // Process structure template
    subgraph cluster_structure {
        label="PROCESS STRUCTURE TEMPLATE";

        "Trigger: Something happens" [shape=ellipse];
        "Initial check?" [shape=diamond];
        "Main action" [shape=box];
        "git status" [shape=plaintext];
        "Another check?" [shape=diamond];
        "Alternative action" [shape=box];
        "STOP: Don't do this" [shape=octagon, style=filled, fillcolor=red, fontcolor=white];
        "Process complete" [shape=doublecircle];

        "Trigger: Something happens" -> "Initial check?";
        "Initial check?" -> "Main action" [label="yes"];
        "Initial check?" -> "Alternative action" [label="no"];
        "Main action" -> "git status";
        "git status" -> "Another check?";
        "Another check?" -> "Process complete" [label="ok"];
        "Another check?" -> "STOP: Don't do this" [label="problem"];
        "Alternative action" -> "Process complete";
    }

    // When to use which shape
    subgraph cluster_shape_rules {
        label="WHEN TO USE EACH SHAPE";

        "Choosing a shape" [shape=ellipse];

        "Is it a decision?" [shape=diamond];
        "Use diamond" [shape=diamond, style=filled, fillcolor=lightblue];

        "Is it a command?" [shape=diamond];
        "Use plaintext" [shape=plaintext, style=filled, fillcolor=lightgray];

        "Is it a warning?" [shape=diamond];
        "Use octagon" [shape=octagon, style=filled, fillcolor=pink];

        "Is it entry/exit?" [shape=diamond];
        "Use doublecircle" [shape=doublecircle, style=filled, fillcolor=lightgreen];

        "Is it a state?" [shape=diamond];
        "Use ellipse" [shape=ellipse, style=filled, fillcolor=lightyellow];

        "Default: use box" [shape=box, style=filled, fillcolor=lightcyan];

        "Choosing a shape" -> "Is it a decision?";
        "Is it a decision?" -> "Use diamond" [label="yes"];
        "Is it a decision?" -> "Is it a command?" [label="no"];
        "Is it a command?" -> "Use plaintext" [label="yes"];
        "Is it a command?" -> "Is it a warning?" [label="no"];
        "Is it a warning?" -> "Use octagon" [label="yes"];
        "Is it a warning?" -> "Is it entry/exit?" [label="no"];
        "Is it entry/exit?" -> "Use doublecircle" [label="yes"];
        "Is it entry/exit?" -> "Is it a state?" [label="no"];
        "Is it a state?" -> "Use ellipse" [label="yes"];
        "Is it a state?" -> "Default: use box" [label="no"];
    }

    // Good vs bad examples
    subgraph cluster_examples {
        label="GOOD VS BAD EXAMPLES";

        // Good: specific and shaped correctly
        "Test failed" [shape=ellipse];
        "Read error message" [shape=box];
        "Can reproduce?" [shape=diamond];
        "git diff HEAD~1" [shape=plaintext];
        "NEVER ignore errors" [shape=octagon, style=filled, fillcolor=red, fontcolor=white];

        "Test failed" -> "Read error message";
        "Read error message" -> "Can reproduce?";
        "Can reproduce?" -> "git diff HEAD~1" [label="yes"];

        // Bad: vague and wrong shapes
        bad_1 [label="Something wrong", shape=box];  // Should be ellipse (state)
        bad_2 [label="Fix it", shape=box];  // Too vague
        bad_3 [label="Check", shape=box];  // Should be diamond
        bad_4 [label="Run command", shape=box];  // Should be plaintext with actual command

        bad_1 -> bad_2;
        bad_2 -> bad_3;
        bad_3 -> bad_4;
    }
}