import { db } from "@/lib/db";

/**
 * Pipeline-wide settings live in the existing SystemConfig key/value table
 * (RenderPipeline2 §14.1) so the fleet can be tuned without redeploys.
 */
export const PIPELINE_CONFIG_DEFAULTS = {
  "render.pollSeconds": 10,
  "render.heartbeatSeconds": 30,
  "render.leaseSeconds": 300,
  "render.maxAttempts": 3,
  "render.stallTimeoutSeconds": 600,
  "render.urgentPriorityThreshold": 20,
  /**
   * How far a preview job outranks the render it follows. A preview is only
   * created when its render finishes, so at equal priority it sorts behind
   * every render queued alongside it — 10 shots run as 10 renders then 10
   * previews, and nothing is reviewable until the end. A boost of 1 finishes
   * shots end to end instead. Set to 0 for the old phase behaviour.
   */
  "render.previewPriorityBoost": 1,
  "render.outputRoot": "//SAN",
  // Validation stage (§8). Disabling it restores the pre-Phase-3 flow
  // (render → preview) without a redeploy, for a bad engine release.
  "validation.enabled": "true",
  "validation.sampleEvery": 25,
  /** Per-check severity overrides, e.g. {"exr_type":"warn"} (§17.3). */
  "validation.overrides": "{}",
  /** Frames of head handle the plates carry; only used for the API timecode fallback (§8.1a). */
  "validation.handleFrames": 8,
  /**
   * Studio-wide delivery defaults (§11.2). A project's own `deliveryConfig`
   * column overrides these key by key; `{}` falls through to the built-ins in
   * lib/render-pipeline/deliveries.ts.
   */
  "delivery.defaultConfig": "{}",
  "preview.maxWidth": 1920,
  // Preview stage (§9): headless AE rebuild of the render with slate/burn-ins
  "preview.enabled": "true",
  "preview.templateAep": "X:/shared_projects_2026/UNGO_VFX/production/working_files/UNG_VFXOVERLAY_SLATE_TEMPLATE.aep",
  "preview.templateComp": "UNG_EXPORT_TEMPLATE",
  "preview.overlayComp": "UNG_VFX_OVERLAY",
  "preview.lutComp": "_SHOW LUT",
  "preview.movTemplate": "4444 Tri",
  "preview.mp4Template": "REVIEW_PREVIEW",
  // Essential Property names on the NETFLIX_SLATE layer for the per-submission
  // fields. If a name is wrong the build logs the template's actual property
  // names as a warning, so it is a config fix rather than a code change.
  "preview.slateScopeProp": "Scope",
  "preview.slateSubmissionProp": "Notes",
} as const;

export type PipelineConfigKey = keyof typeof PIPELINE_CONFIG_DEFAULTS;

export async function getConfigValue(key: PipelineConfigKey): Promise<string> {
  const row = await db.systemConfig.findUnique({ where: { key } });
  return row?.value ?? String(PIPELINE_CONFIG_DEFAULTS[key]);
}

export async function getConfigNumber(key: PipelineConfigKey): Promise<number> {
  const raw = await getConfigValue(key);
  const n = Number(raw);
  return Number.isFinite(n) ? n : Number(PIPELINE_CONFIG_DEFAULTS[key]);
}

export async function getConfigBoolean(key: PipelineConfigKey): Promise<boolean> {
  const raw = (await getConfigValue(key)).trim().toLowerCase();
  return raw === "true" || raw === "1" || raw === "yes";
}

/** Preview-stage settings handed to the worker inside the PREVIEW_ONLY manifest. */
export async function getPreviewConfig() {
  const [
    enabled, templateAep, templateComp, overlayComp, lutComp, movTemplate, mp4Template,
    slateScopeProp, slateSubmissionProp,
  ] = await Promise.all([
    getConfigBoolean("preview.enabled"),
    getConfigValue("preview.templateAep"),
    getConfigValue("preview.templateComp"),
    getConfigValue("preview.overlayComp"),
    getConfigValue("preview.lutComp"),
    getConfigValue("preview.movTemplate"),
    getConfigValue("preview.mp4Template"),
    getConfigValue("preview.slateScopeProp"),
    getConfigValue("preview.slateSubmissionProp"),
  ]);
  return {
    enabled, templateAep, templateComp, overlayComp, lutComp, movTemplate, mp4Template,
    slateScopeProp, slateSubmissionProp,
  };
}

/** Worker-facing config bundle returned by E6 registration. */
export async function getWorkerConfig() {
  const [
    pollSeconds, heartbeatSeconds, leaseSeconds, maxAttempts, stallTimeoutSeconds,
    validationEnabled, validationSampleEvery, validationHandleFrames,
  ] = await Promise.all([
    getConfigNumber("render.pollSeconds"),
    getConfigNumber("render.heartbeatSeconds"),
    getConfigNumber("render.leaseSeconds"),
    getConfigNumber("render.maxAttempts"),
    getConfigNumber("render.stallTimeoutSeconds"),
    getConfigBoolean("validation.enabled"),
    getConfigNumber("validation.sampleEvery"),
    getConfigNumber("validation.handleFrames"),
  ]);
  return {
    pollSeconds, heartbeatSeconds, leaseSeconds, maxAttempts, stallTimeoutSeconds,
    // Whether the validation stage runs is the server's call, so switching it
    // off is a config change here rather than a redeploy of every worker (§8).
    validationEnabled, validationSampleEvery, validationHandleFrames,
  };
}