"""RESUME_ENRICHING 模块队列引擎（V1 全链路收集）。

组件事件分发见 enrichment_collectors.py；fsm.py 通过函数内 import 调用，避免循环依赖。
"""

from __future__ import annotations

from typing import Any

from .enrichment_modules import (
    ENRICHMENT_MODULES,
    ENRICHMENT_QUEUES,
    PICKER_OPTIONS,
    RECORD_KEYS,
    TAG_TITLES,
    ModuleSpec,
    skill_suggestions,
)
from .fsm import Transition, assistant_turn, component
from .models import ComposerMode, JobType, Stage
from .record_card import record_card


def ensure_enrichment_state(profile: dict[str, Any]) -> dict[str, Any]:
    """惰性创建 records/tags/enrichment；旧会话现场建队列。"""
    records = profile.setdefault("records", {})
    for key in RECORD_KEYS:
        records.setdefault(key, [])
    profile.setdefault("tags", {"skills": [], "certificates": []})
    enrichment = profile.setdefault("enrichment", {})
    if "queue" not in enrichment:
        try:
            job_type = JobType(str(profile.get("job_type")))
        except ValueError as exc:
            raise ValueError("profile contains an unsupported job_type") from exc
        enrichment["queue"] = list(ENRICHMENT_QUEUES[job_type])
    enrichment.setdefault("index", 0)
    enrichment.setdefault("current", None)
    enrichment.setdefault("skipped", [])
    enrichment.setdefault("completed", [])
    enrichment.setdefault("module_draft", {})
    enrichment.setdefault("custom_mode", False)
    return profile


def current_module(profile: dict[str, Any]) -> ModuleSpec | None:
    name = (profile.get("enrichment") or {}).get("current")
    return ENRICHMENT_MODULES.get(name) if name else None


def enrichment_progress(profile: dict[str, Any]) -> dict[str, Any]:
    enrichment = profile.get("enrichment") or {}
    total = len(enrichment.get("queue") or [])
    completed = len(enrichment.get("completed") or [])
    # total 固定为队列长度；skip 只切换到下一模块，不推进度（PR 评审结论）
    ratio = completed / total if total > 0 else 1.0
    return {
        "completed": completed,
        "skipped": len(enrichment.get("skipped") or []),
        "total": total,
        "ratio": ratio,
    }


def begin_enrichment(profile: dict[str, Any]) -> Transition:
    ensure_enrichment_state(profile)
    enrichment = profile["enrichment"]
    queue = enrichment["queue"]
    if enrichment["index"] >= len(queue):
        from .enrichment_custom import custom_card_picker_transition

        return custom_card_picker_transition(profile)
    profile["enrichment_finished"] = False
    spec = ENRICHMENT_MODULES[queue[enrichment["index"]]]
    enrichment["current"] = spec.name
    enrichment["module_draft"] = {}
    return begin_module(profile, spec)


def progress_block(profile: dict[str, Any], spec: ModuleSpec) -> dict[str, Any]:
    progress = enrichment_progress(profile)
    return component(
        "ProgressCard",
        module=spec.name,
        completed=progress["completed"],
        skipped=progress["skipped"],
        total=progress["total"],
        percent=round(progress["ratio"] * 100),
        actions=["defer"],
    )


def begin_module(profile: dict[str, Any], spec: ModuleSpec) -> Transition:
    blocks = [progress_block(profile, spec)]
    if spec.name in PICKER_OPTIONS and not profile["enrichment"]["module_draft"].get("record_type"):
        options = [{"value": v, "label": l} for v, l in PICKER_OPTIONS[spec.name]]
        blocks.append(
            component("ChoiceChips", module=spec.name, field="record_type", title=spec.prompt, options=options, skippable=True)
        )
    elif spec.kind in {"record_fields", "anchor_note"}:
        blocks.append(record_card(profile, spec))
    elif spec.kind == "record_form":
        blocks.append(component("CompetitionFields", module=spec.name, title=spec.prompt))
    elif spec.kind == "tags":
        field = spec.optional_fields[0]
        profile["enrichment"]["module_draft"] = {"field": field}
        data = {
            "module": spec.name,
            "field": field,
            "title": TAG_TITLES[field],
            "description": spec.prompt,
        }
        if field == "skills":
            data["suggestions"] = skill_suggestions(profile.get("target_position"), profile)
        blocks.append(component("TagsInput", **data))
    transition = Transition(
        Stage.RESUME_ENRICHING,
        profile,
        assistant_turn(spec.prompt, blocks, mode=ComposerMode.UI_ONLY),
    )
    if spec.kind == "tags" and spec.optional_fields[0] == "skills":
        transition.suggest_skills = True
    return transition


def advance_or_finish(profile: dict[str, Any], *, refresh: bool = False) -> Transition:
    enrichment = profile["enrichment"]
    enrichment["index"] += 1
    enrichment["module_draft"] = {}
    if enrichment["index"] >= len(enrichment["queue"]):
        from .enrichment_custom import custom_card_picker_transition

        transition = custom_card_picker_transition(profile)
    else:
        spec = ENRICHMENT_MODULES[enrichment["queue"][enrichment["index"]]]
        enrichment["current"] = spec.name
        transition = begin_module(profile, spec)
    transition.refresh_resume = refresh
    return transition


def defer_enrichment(profile: dict[str, Any]) -> Transition:
    profile["enrichment"]["current"] = None
    profile["enrichment"]["module_draft"] = {}
    profile["enrichment_finished"] = True
    return Transition(
        Stage.CONTENT_READY,
        profile,
        assistant_turn(
            "好的，随时可以回来继续完善。",
            [component("ContentReadyCard", can_continue=True)],
            mode=ComposerMode.UI_ONLY,
        ),
        lifecycle="confirmed",
    )


def skip_module(profile: dict[str, Any], spec: ModuleSpec) -> Transition:
    if profile["enrichment"].get("custom_mode"):
        from .enrichment_custom import custom_card_picker_transition

        return custom_card_picker_transition(profile)
    skipped = profile["enrichment"]["skipped"]
    if spec.name not in skipped:
        skipped.append(spec.name)
    return advance_or_finish(profile)


def mark_completed(profile: dict[str, Any], name: str) -> None:
    completed = profile["enrichment"]["completed"]
    if name not in completed:
        completed.append(name)


def add_another_transition(profile: dict[str, Any], spec: ModuleSpec, *, refresh: bool = False) -> Transition:
    """multi 模块确认一段后的"再添加/下一项"卡片。"""
    transition = Transition(
        Stage.RESUME_ENRICHING,
        profile,
        assistant_turn(
            "已写入简历。",
            [
                progress_block(profile, spec),
                component(
                    "AddAnother",
                    module=spec.name,
                    title="还要再添加一段吗？",
                    options=[
                        {"value": "again", "label": "再添加一段"},
                        {"value": "next", "label": "进入下一项"},
                    ],
                ),
            ],
            mode=ComposerMode.UI_ONLY,
        ),
        lifecycle="confirmed",
    )
    transition.refresh_resume = refresh
    return transition