// Bilingual companion copy — Mandarin first (she writes/reads in Mandarin), with
// a warm English subtitle. Kept gentle and encouraging, never scolding. The
// bubble renders zh prominently and en underneath. (Spec north star: CJK is
// first-class; Ask Petal & companion answer in Mandarin.)

export interface Line {
  zh: string
  en: string
}

// Played when a suggestion is accepted or a milestone hits — pure warmth.
export const ENCOURAGEMENTS: Line[] = [
  { zh: '好棒！这一句更顺了 🌸', en: 'Lovely — that reads so much smoother now.' },
  { zh: '你写得越来越好了 ✨', en: "You're getting better and better." },
  { zh: '我很喜欢这个改法 💕', en: 'I really like that change.' },
  { zh: '继续保持，加油！', en: 'Keep going — you’ve got this!' },
  { zh: '嗯嗯，这样清楚多了 👍', en: 'Mm, that’s much clearer.' },
]

// Gentle, generic writing/ESL tips — the fallback when the rules-based prose
// checker (prose.ts) finds nothing concrete to point at in her current text.
export const TIPS: Line[] = [
  { zh: '小贴士：英文句子短一点，会更清楚哦。', en: 'Tip: shorter English sentences often read clearer.' },
  { zh: '别忘了冠词 “the” 和 “a” 哦。', en: "Don't forget articles like “the” and “a”." },
  { zh: '过去的事情用过去式：go → went。', en: 'For the past, use past tense: go → went.' },
  { zh: '读出声音，能帮你发现奇怪的地方。', en: 'Reading aloud helps you catch awkward spots.' },
  { zh: '一个段落讲一个想法就好。', en: 'One idea per paragraph keeps it tidy.' },
  { zh: '不确定的地方，问问我就好啦 ✨', en: 'Not sure about something? Just ask me. ✨' },
  { zh: '复数别忘了加 s：two apples 🍎', en: 'Plurals take an “s”: two apples 🍎' },
]

// Shown after a long stretch of continuous writing.
export const BREAKS: Line[] = [
  { zh: '写了好一会儿啦，起来走走，让眼睛休息一下 🍵', en: "You've been writing a while — stretch and rest your eyes. 🍵" },
  { zh: '喝口水，休息五分钟好不好？', en: 'Sip some water and take five?' },
  { zh: '看看远方，放松一下眼睛 🌿', en: 'Look into the distance for a moment — give your eyes a break. 🌿' },
]

// First hello when the app opens.
export const GREETING: Line = {
  zh: '嗨～我在这儿陪你写作哦 🐱',
  en: "Hi! I'm right here keeping you company. 🐱",
}

// Welcome-back nudge after she returns from an idle pause.
export const WELCOME_BACK: Line = {
  zh: '欢迎回来 ✨ 我们继续吧！',
  en: 'Welcome back ✨ let’s keep going!',
}

// Gentle "haiya, something went wrong" lines — paired with the error sound when
// the LLM is unreachable or a save fails. Never alarming, always reassuring.
export const ERRORS: Line[] = [
  { zh: '哎呀～出了点小问题，你的字都还在哦。', en: 'Oops — a little hiccup, but your words are safe.' },
  { zh: '哎呀，我这边卡了一下，马上就好。', en: 'Haiya, I got stuck for a sec — back in a moment.' },
  { zh: '别担心，等一下再试试看 🍵', en: "Don't worry — let's try again in a bit. 🍵" },
]

// Word-count milestones worth a little cheer — every 100 words, on up.
export const MILESTONES = Array.from({ length: 100 }, (_, i) => (i + 1) * 100)

export function milestoneLine(n: number): Line {
  return {
    zh: `哇！已经 ${n} 个词了，太厉害了 🎉`,
    en: `Wow — ${n} words already! Amazing. 🎉`,
  }
}

// Deterministic-enough random pick (Math.random is fine in the browser runtime).
export function pick<T>(arr: T[]): T {
  return arr[Math.floor(Math.random() * arr.length)]
}