initial commit

Outnumbered/Data/NpgsqlRepository.cs

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+using System.Data.Common;
+using Dapper;
+using Npgsql;
+
+namespace Outnumbered.Data;
+
+// PostgreSQL backend — the PRODUCTION store (Provider="postgres"). Shares all queries with DapperPlayerRepository;
+// supplies only the connection (Npgsql pooling per connection string; MVCC, no WAL/busy_timeout pragmas) and the schema
+// DDL (BIGINT columns -> Dapper Int64 -> the same `long` row records). No drop-migration; later columns reach
+// existing prod tables via the ADD COLUMN IF NOT EXISTS block (CREATE TABLE IF NOT EXISTS alone never alters them).
+public sealed class NpgsqlRepository(string connectionString, string serverId) : DapperPlayerRepository(serverId)
+{
+    private readonly string _connectionString = connectionString;
+
+    protected override async Task<DbConnection> OpenConnectionAsync()
+    {
+        var c = new NpgsqlConnection(_connectionString);
+        await c.OpenAsync();
+        return c;
+    }
+
+    public override async Task EnsureSchemaAsync()
+    {
+        await using var c = await OpenConnectionAsync();
+        await c.ExecuteAsync(
+            """
+            CREATE TABLE IF NOT EXISTS players(
+                steamid  BIGINT PRIMARY KEY,
+                name     TEXT   NOT NULL DEFAULT '',
+                xp       BIGINT NOT NULL DEFAULT 0,
+                level    BIGINT NOT NULL DEFAULT 1,
+                prestige BIGINT NOT NULL DEFAULT 0,
+                points   BIGINT NOT NULL DEFAULT 1,
+                primary_weapon   TEXT,
+                secondary_weapon TEXT,
+                best_wave  BIGINT,
+                gg_best_ms BIGINT,
+                last_seen TIMESTAMPTZ);
+            CREATE TABLE IF NOT EXISTS upgrades(
+                steamid  BIGINT NOT NULL,
+                stat_key TEXT   NOT NULL,
+                level    BIGINT NOT NULL,
+                PRIMARY KEY(steamid, stat_key));
+            CREATE TABLE IF NOT EXISTS match_state(
+                server_id      TEXT   NOT NULL DEFAULT 'default',
+                steamid        BIGINT NOT NULL,
+                kills          BIGINT NOT NULL DEFAULT 0,
+                deaths         BIGINT NOT NULL DEFAULT 0,
+                streak         BIGINT NOT NULL DEFAULT 0,
+                headshot_kills BIGINT NOT NULL DEFAULT 0,
+                gg_run_started_at BIGINT,
+                PRIMARY KEY(server_id, steamid));
+            ALTER TABLE players     ADD COLUMN IF NOT EXISTS best_wave  BIGINT;
+            ALTER TABLE players     ADD COLUMN IF NOT EXISTS gg_best_ms BIGINT;
+            ALTER TABLE match_state ADD COLUMN IF NOT EXISTS gg_run_started_at BIGINT;
+            """);
+    }
+}