import { readFileSync } from "node:fs";
import { resolve } from "node:path";
import { capabilityId, type WorkspaceRevision } from "../../src/capability-model/index.js";
import {
  compileCapabilityResourceSource,
  compileCapabilitySource,
  type CapabilityImportEnvironment,
} from "../../src/capability-language/index.js";
import type { InterfaceRevision, PackageRevision } from "../../src/capability-model/index.js";

export const fixtureId = {
  workspace: capabilityId.workspace("workspace:todo"),
  workspaceRevision: capabilityId.workspaceRevision("workspace:todo@1"),
  project: capabilityId.atom("atom:project"),
  person: capabilityId.atom("atom:person"),
  namedV1: capabilityId.interfaceRevision("interface:named@1"),
  ownedV1: capabilityId.interfaceRevision("interface:owned@1"),
  summaryV1: capabilityId.interfaceRevision("interface:summary@1"),
  namedGet: capabilityId.operation("operation:named:name:get"),
  namedSet: capabilityId.operation("operation:named:name:set"),
  ownerResolve: capabilityId.operation("operation:owned:owner:resolve"),
  summaryGet: capabilityId.operation("operation:summary:summary:get"),
  projectTitle: capabilityId.slot("slot:project:title"),
  personName: capabilityId.slot("slot:person:name"),
  projectOwner: capabilityId.edgeType("edge:project:owner"),
  projectOwnerProjection: capabilityId.edgeProjection("projection:project-owner:owner"),
  projectNamedConformance: {
    atomId: capabilityId.atom("atom:project"),
    interfaceRevisionId: capabilityId.interfaceRevision("interface:named@1"),
  },
  personNamedConformance: {
    atomId: capabilityId.atom("atom:person"),
    interfaceRevisionId: capabilityId.interfaceRevision("interface:named@1"),
  },
  projectOwnedConformance: {
    atomId: capabilityId.atom("atom:project"),
    interfaceRevisionId: capabilityId.interfaceRevision("interface:owned@1"),
  },
  projectSummaryConformance: {
    atomId: capabilityId.atom("atom:project"),
    interfaceRevisionId: capabilityId.interfaceRevision("interface:summary@1"),
  },
  todoRuntimeV1: capabilityId.packageRevision("package:todo-runtime@1"),
  summaryGetExport: capabilityId.packageExport("export:todo-runtime:summary-get"),
  createPersonExport: capabilityId.packageExport("export:todo-runtime:create-person"),
  titlePort: capabilityId.dependencyPort("port:summary:title"),
  namedPort: capabilityId.dependencyPort("port:summary:named"),
  personPort: capabilityId.dependencyPort("port:summary:person"),
} as const;

export const capabilityFixturePath = resolve(process.cwd(), "test/fixtures/todo.capabilities.qx");

export const capabilityFixtureSource = readFileSync(capabilityFixturePath, "utf8");

const resourceSource = (name: string) => readFileSync(resolve(process.cwd(), "test/fixtures", name), "utf8");

export const capabilityResourceSources = {
  named: resourceSource("named.interface.qx"),
  owned: resourceSource("owned.interface.qx"),
  summary: resourceSource("summary.interface.qx"),
  todo: resourceSource("todo.package.qx"),
} as const;

const source = (repository: string, commit: string) => ({ repository, commit });

const interfaceRevision = (
  resource: { kind: "interface"; revision: InterfaceRevision } | { kind: "package"; revision: PackageRevision },
) => {
  if (resource.kind !== "interface") throw new Error("Expected interface fixture");
  return resource.revision;
};

const packageRevision = (
  resource: { kind: "interface"; revision: InterfaceRevision } | { kind: "package"; revision: PackageRevision },
) => {
  if (resource.kind !== "package") throw new Error("Expected package fixture");
  return resource.revision;
};

export const compileCapabilityFixture = (
  overrides: Partial<{
    workspace: string;
    named: string;
    owned: string;
    summary: string;
    todo: string;
  }> = {},
) => {
  const named = compileCapabilityResourceSource(overrides.named ?? capabilityResourceSources.named, {
    source: source("https://repos.quixos.org/quixos-todo/interface-named.git", "2".repeat(40)),
    fileName: "named.interface.qx",
  });
  if (!named.ok) return named;
  const namedRevision = interfaceRevision(named.resource);
  const namedEnvironment: CapabilityImportEnvironment = {
    interfaces: new Map([["Named", namedRevision]]),
    interfaceClosure: [namedRevision],
  };
  const owned = compileCapabilityResourceSource(overrides.owned ?? capabilityResourceSources.owned, {
    source: source("https://repos.quixos.org/quixos-todo/interface-owned.git", "3".repeat(40)),
    fileName: "owned.interface.qx",
    environment: namedEnvironment,
  });
  if (!owned.ok) return owned;
  const ownedRevision = interfaceRevision(owned.resource);
  const summary = compileCapabilityResourceSource(overrides.summary ?? capabilityResourceSources.summary, {
    source: source("https://repos.quixos.org/quixos-todo/interface-summary.git", "4".repeat(40)),
    fileName: "summary.interface.qx",
  });
  if (!summary.ok) return summary;
  const summaryRevision = interfaceRevision(summary.resource);
  const todo = compileCapabilityResourceSource(overrides.todo ?? capabilityResourceSources.todo, {
    source: source("https://repos.quixos.org/quixos-todo/package-todo-runtime.git", "5".repeat(40)),
    fileName: "todo.package.qx",
    environment: namedEnvironment,
  });
  if (!todo.ok) return todo;
  const todoRevision = packageRevision(todo.resource);
  return compileCapabilitySource(overrides.workspace ?? capabilityFixtureSource, capabilityFixturePath, {
    interfaces: new Map([
      ["Named", namedRevision],
      ["Owned", ownedRevision],
      ["Summary", summaryRevision],
    ]),
    packages: new Map([["TodoRuntime", todoRevision]]),
    interfaceClosure: [namedRevision, ownedRevision, summaryRevision],
    packageClosure: [todoRevision],
  });
};

export const makeValidCapabilityWorkspace = (): WorkspaceRevision => {
  const result = compileCapabilityFixture();
  if (!result.ok) {
    throw new Error(result.diagnostics.map((entry) => `${entry.phase}/${entry.code}: ${entry.message}`).join("\n"));
  }
  return structuredClone(result.workspace);
};