// Generate 500 distinct language construct descriptions

using System;
using System.Collections.Generic;

namespace AIBrain.Daemon
{
    public static class SeedLanguage
    {
        public static IEnumerable<string> GenLanguage(int n)
        {
            var constructs = new[]
            {
                "algebraic data types", "pattern matching", "type inference", "higher-kinded types",
                "typeclasses", "traits", "interfaces", "generics", "lifetimes", "borrow checker",
                "monads", "applicatives", "functors", "effects system", "capability-based security",
                "linear types", "dependent types", "gradual typing", "refinement types", "row polymorphism",
                "async/await", "coroutines", "green threads", "actors", "channels",
                "CSP-style concurrency", "STM transactions", "lock-free structures", "immutability by default",
                "pattern guards", "do notation", "pipelines", "macros (hygienic)", "macro_rules",
                "procedural macros", "compile-time evaluation", "const generics", "metaprogramming",
                "zero-cost abstractions", "move semantics", "ownership model", "sum types", "product types"
            };

            var domains = new[]
            {
                "systems programming", "web services", "data processing", "numerical computing",
                "distributed systems", "embedded", "graphics", "machine learning", "blockchain",
                "scripting", "desktop apps", "mobile"
            };

            var extras = new[]
            {
                "with borrow-checking", "with region-based memory", "with green-thread scheduler",
                "with capability tokens", "with staged compilation", "with partial evaluation",
                "with ownership transfer", "with structural typing", "with nominal typing",
                "with effect handlers", "with delimited continuations"
            };

            var seen = new HashSet<string>();
            int i = 0;

            foreach (var c in constructs)
            {
                foreach (var d in domains)
                {
                    var phrase = $"Language construct: {c} for {d}";
                    if (seen.Contains(phrase))
                        continue;

                    seen.Add(phrase);
                    yield return phrase;
                    i++;

                    if (i >= n)
                        yield break;
                }
            }

            if (i < n)
            {
                foreach (var c in constructs)
                {
                    foreach (var e in extras)
                    {
                        var phrase = $"Language construct: {c} {e}";
                        if (seen.Contains(phrase))
                            continue;

                        seen.Add(phrase);
                        yield return phrase;
                        i++;

                        if (i >= n)
                            yield break;
                    }
                }
            }
        }

        public static void Main(string[] args)
        {
            SeedCommon.RunSeed("language", GenLanguage);
        }
    }
}