package static

import (
	"encoding/json"
	"testing"

	"github.com/alexei/tinyforge/internal/workload/plugin"
)

func validCfg(extra map[string]any) json.RawMessage {
	m := map[string]any{"repo_owner": "o", "repo_name": "r"}
	for k, v := range extra {
		m[k] = v
	}
	b, _ := json.Marshal(m)
	return b
}

func TestValidate_Strategy(t *testing.T) {
	cases := []struct {
		strategy string
		wantErr  bool
	}{
		{"", false},
		{"recreate", false},
		{"blue-green", false},
		{"rolling", true},
		{"junk", true},
	}
	for _, c := range cases {
		t.Run("strategy="+c.strategy, func(t *testing.T) {
			err := (&source{}).Validate(validCfg(map[string]any{"deploy_strategy": c.strategy}))
			if (err != nil) != c.wantErr {
				t.Fatalf("Validate(strategy=%q) err=%v, wantErr=%v", c.strategy, err, c.wantErr)
			}
		})
	}
}

func TestEffectiveStrategy_DefaultAndDenoGate(t *testing.T) {
	if got := effectiveStrategy(Config{}); got != plugin.StrategyRecreate {
		t.Fatalf("empty strategy = %q, want recreate", got)
	}
	if got := effectiveStrategy(Config{DeployStrategy: plugin.StrategyBlueGreen}); got != plugin.StrategyBlueGreen {
		t.Fatalf("plain blue-green = %q, want blue-green", got)
	}
	// Storage-backed deno site requesting blue-green is forced to recreate to
	// avoid a concurrent-writer overlap on the shared /app/data volume.
	denoStorage := Config{DeployStrategy: plugin.StrategyBlueGreen, StorageEnabled: true, Mode: "deno"}
	if got := effectiveStrategy(denoStorage); got != plugin.StrategyRecreate {
		t.Fatalf("deno+storage blue-green = %q, want recreate (forced)", got)
	}
	// A deno site WITHOUT storage may use blue-green.
	denoNoStorage := Config{DeployStrategy: plugin.StrategyBlueGreen, Mode: "deno"}
	if got := effectiveStrategy(denoNoStorage); got != plugin.StrategyBlueGreen {
		t.Fatalf("deno (no storage) blue-green = %q, want blue-green", got)
	}
}