import type { RouteLocationRaw } from 'vue-router'
import { getHouseholdSlug } from '@/api/client'

// Centralized builders for slug-scoped routes to keep navigation consistent

// When an options object is provided, require an explicit slug.
// Callers may also omit the argument entirely to infer from context.
type WithSlug = { slug: string }

function resolveSlug(input?: WithSlug): string {
  if (input && typeof input.slug === 'string') return input.slug
  return getHouseholdSlug() ?? ''
}

// Pages without ids
export function toMealPlan(slugOrOpts?: WithSlug): RouteLocationRaw {
  const slug = resolveSlug(slugOrOpts)
  return { name: 'mealplan', params: { householdSlug: slug } }
}

export function toRecipes(slugOrOpts?: WithSlug): RouteLocationRaw {
  const slug = resolveSlug(slugOrOpts)
  return { name: 'recipes', params: { householdSlug: slug } }
}

export function toRecipeAdd(slugOrOpts?: WithSlug): RouteLocationRaw {
  const slug = resolveSlug(slugOrOpts)
  return { name: 'recipe-add', params: { householdSlug: slug } }
}

export function toMealAdd(slugOrOpts?: WithSlug): RouteLocationRaw {
  const slug = resolveSlug(slugOrOpts)
  return { name: 'meal-add', params: { householdSlug: slug } }
}

export function toShoppingCurrent(slugOrOpts?: WithSlug): RouteLocationRaw {
  const slug = resolveSlug(slugOrOpts)
  return { name: 'shopping-current', params: { householdSlug: slug } }
}

export function toHouseholdSettings(slugOrOpts?: WithSlug): RouteLocationRaw {
  const slug = resolveSlug(slugOrOpts)
  return { name: 'household-settings', params: { householdSlug: slug } }
}

// Pages with ids
type WithId = { id: number | string }
type IdOrOpts = number | string | (WithId & WithSlug)

export function toRecipeEdit(idOrOpts: IdOrOpts): RouteLocationRaw {
  const id = typeof idOrOpts === 'object' ? idOrOpts.id : idOrOpts
  const slug = resolveSlug(typeof idOrOpts === 'object' ? idOrOpts : undefined)
  return { name: 'recipe-edit', params: { householdSlug: slug, id } }
}

export function toMealEdit(idOrOpts: IdOrOpts): RouteLocationRaw {
  const id = typeof idOrOpts === 'object' ? idOrOpts.id : idOrOpts
  const slug = resolveSlug(typeof idOrOpts === 'object' ? idOrOpts : undefined)
  return { name: 'meal-edit', params: { householdSlug: slug, id } }
}

export function toShoppingList(idOrOpts: IdOrOpts): RouteLocationRaw {
  const id = typeof idOrOpts === 'object' ? idOrOpts.id : idOrOpts
  const slug = resolveSlug(typeof idOrOpts === 'object' ? idOrOpts : undefined)
  return { name: 'shopping-list', params: { householdSlug: slug, id } }
}