package api

import (
    "os"
    "path/filepath"
    "testing"
)

func TestDiskCache_params_promote_list(t *testing.T) {
    root := t.TempDir()
    c, err := NewDiskCache(root)
    if err != nil {
        t.Fatal(err)
    }

    id := "319d72c7-301d-44fd-935f-3526dfb70f9f"
    dir := c.waitingDir(id)
    if err := os.MkdirAll(dir, 0o755); err != nil {
        t.Fatal(err)
    }
    params := TaskParams{
        ID:      id,
        Created: "2026-03-31 21:37:46",
        Status:  string(statusReady),
        Model:   "ggml-small",
        Text:    "test",
    }
    if err := c.writeParams(dir, params); err != nil {
        t.Fatal(err)
    }

    list, err := c.List()
    if err != nil {
        t.Fatal(err)
    }
    if list[id]["status"] != string(statusReady) {
        t.Fatalf("list: %v", list[id])
    }

    if err := c.PromoteToReady(id); err != nil {
        t.Fatal(err)
    }
    _, phase, err := c.LoadParams(id)
    if err != nil || phase != cacheReady {
        t.Fatalf("phase=%s err=%v", phase, err)
    }
    if _, err := os.Stat(filepath.Join(c.readyDir(id), fileParams)); err != nil {
        t.Fatal(err)
    }
}

func TestIsValidTaskID(t *testing.T) {
    if !isValidTaskID("319d72c7-301d-44fd-935f-3526dfb70f9f") {
        t.Fatal("uuid should be valid")
    }
    if isValidTaskID("../etc") {
        t.Fatal("path traversal must be rejected")
    }
}

func TestResolveCacheRoot_absolute(t *testing.T) {
    cwd, err := os.Getwd()
    if err != nil {
        t.Fatal(err)
    }
    abs, err := resolveCacheRoot("./cache")
    if err != nil {
        t.Fatal(err)
    }
    want := filepath.Join(cwd, "cache")
    if abs != want {
        t.Fatalf("got %q want %q", abs, want)
    }
}

func TestDiskCache_RecoverInterrupted(t *testing.T) {
    root := t.TempDir()
    c, err := NewDiskCache(root)
    if err != nil {
        t.Fatal(err)
    }
    id := "task-1"
    dir := c.waitingDir(id)
    if err := os.MkdirAll(dir, 0o755); err != nil {
        t.Fatal(err)
    }
    if err := c.writeParams(dir, TaskParams{
        ID: id, Created: "2026-01-01 00:00:00", Status: string(statusProcessing), Model: "m",
    }); err != nil {
        t.Fatal(err)
    }
    if err := c.RecoverInterrupted(); err != nil {
        t.Fatal(err)
    }
    p, _, err := c.LoadParams(id)
    if err != nil {
        t.Fatal(err)
    }
    if p.Status != string(statusWaiting) {
        t.Fatalf("got %q", p.Status)
    }
}

func TestDiskCache_RecoverInterrupted_promotesReady(t *testing.T) {
    root := t.TempDir()
    c, err := NewDiskCache(root)
    if err != nil {
        t.Fatal(err)
    }
    id := "done-task"
    dir := c.waitingDir(id)
    if err := os.MkdirAll(dir, 0o755); err != nil {
        t.Fatal(err)
    }
    if err := c.writeParams(dir, TaskParams{
        ID: id, Created: "2026-01-01 00:00:00", Status: string(statusReady), Model: "m", Text: "hi",
    }); err != nil {
        t.Fatal(err)
    }
    if err := c.RecoverInterrupted(); err != nil {
        t.Fatal(err)
    }
    _, phase, err := c.LoadParams(id)
    if err != nil || phase != cacheReady {
        t.Fatalf("phase=%s err=%v", phase, err)
    }
}