import type { InstallTarget } from "./target-base.ts";
import type { SkillInstallTarget } from "./target-skill.ts";
import type { CliInstallArtifactKey, InstallActionKind } from "./target-types.ts";
import { INSTALL_TARGETS } from "./targets";

export { INSTALL_TARGETS } from "./targets";

export const INSTALL_ARTIFACT_KEYS: CliInstallArtifactKey[] = INSTALL_TARGETS.map((t) => t.key);

export const SKILL_KEYS: CliInstallArtifactKey[] = INSTALL_TARGETS.filter((t) => t.category === "skill").map(
  (t) => t.key,
);

export const MCP_KEYS: CliInstallArtifactKey[] = INSTALL_TARGETS.filter((t) => t.category === "mcp").map((t) => t.key);

/** Maps plan action kinds to install.targets artifact keys. */
export const ACTION_KIND_TO_ARTIFACT: Record<InstallActionKind, CliInstallArtifactKey> = Object.fromEntries(
  INSTALL_TARGETS.map((t) => [t.actionKind, t.key]),
) as Record<InstallActionKind, CliInstallArtifactKey>;

const targetByKey = new Map(INSTALL_TARGETS.map((t) => [t.key, t]));

/** Lookup a registered install target by artifact key. */
export function installTargetForKey(key: CliInstallArtifactKey): InstallTarget | undefined {
  return targetByKey.get(key);
}

/** True when the artifact key is an MCP install target (requires mcpServer.enabled). */
export function isMcpArtifactKey(key: CliInstallArtifactKey): boolean {
  return installTargetForKey(key)?.category === "mcp";
}

/**
 * MCP install targets are inactive without mcpServer.enabled.
 * Defaults: artifactDefaults in target-effective.ts.
 * Explicit spec rejection: validateConfigureConfig in validate.ts.
 */
export function mcpServerRequiredForArtifact(key: CliInstallArtifactKey, mcpServerEnabled: boolean): boolean {
  return !isMcpArtifactKey(key) || mcpServerEnabled;
}

/** Lookup by plan action kind. */
export function installTargetForActionKind(kind: InstallActionKind): InstallTarget | undefined {
  return INSTALL_TARGETS.find((t) => t.actionKind === kind);
}

/** Skill targets for uninstall summary → directory resolution. */
export function skillTargetForUninstallSummary(summary: string): SkillInstallTarget | undefined {
  for (const t of INSTALL_TARGETS) {
    if (
      t.category === "skill" &&
      (t as SkillInstallTarget).uninstallPrefix &&
      summary.startsWith((t as SkillInstallTarget).uninstallPrefix)
    ) {
      return t as SkillInstallTarget;
    }
  }
  return undefined;
}