from __future__ import annotations

from fastapi import APIRouter, Depends, File, HTTPException, UploadFile
from fastapi.responses import FileResponse
from pydantic import BaseModel, Field

from auth import require_auth
from dialogue_store import StoreError, delete_conversation, get_conversation, list_messages
from dialogue_turn import run_turn, visible_for_role
from privacy_gateway import GatewayRequest, inspect
from engine import EngineError
from journal_generate import generate_draft
from journal_policy import PolicyError
from journal_store import (
    create_day_conversation,
    create_user_space,
    day_payload,
    get_day,
    get_entry,
    get_or_create_day,
    get_user_space,
    list_days,
    list_user_spaces,
    list_versions,
    rename_user_space,
    restore_entry,
    save_day_scratch,
    save_entry,
    soft_delete_entry,
)
from media_store import delete_media, get_media, list_media, save_media
from writing_profile_store import (
    accept_suggestion as accept_writing_suggestion,
    export_document as export_writing_document,
    get_profile,
    import_corpus,
    list_corpus,
    rebuild_brief,
    reject_suggestion as reject_writing_suggestion,
    remember_dialogue_style,
    remember_journal_entry,
    restore_document as restore_writing_document,
    set_governance as set_writing_governance,
    update_facet,
    update_trait,
)
from profile_review import (
    ingest_import,
    ingest_journal,
    import_result as import_review_result,
    open_paste_review,
    review_status,
    run_api_review,
    accept_proposal,
    reject_proposal,
)
from interaction_profile_store import (
    accept_suggestion as accept_interaction_suggestion,
    export_document as export_interaction_document,
    get_profile as get_interaction_profile,
    reject_suggestion as reject_interaction_suggestion,
    restore_document as restore_interaction_document,
    set_governance as set_interaction_governance,
    upsert_preference,
)
from profile_documents import export_bundle, restore_bundle

router = APIRouter(prefix="/api/journal", tags=["journal"])


def _http(exc: StoreError | PolicyError | EngineError):
    raise HTTPException(status_code=exc.status_code, detail={"code": exc.code, "message": exc.message}) from exc


class SpaceWrite(BaseModel):
    title: str = Field(min_length=1)


class DayWrite(BaseModel):
    calendar_date: str = Field(min_length=10, max_length=10)


class ConversationWrite(BaseModel):
    title: str = ""


class TurnWrite(BaseModel):
    body: str = Field(min_length=1)
    id: str | None = None


class GenerateWrite(BaseModel):
    conversation_ids: list[str] | None = None
    include_existing: bool = False


class EntryWrite(BaseModel):
    journal_day_id: str
    title: str = ""
    body: str = ""
    entry_id: str | None = None
    origin: str = "user_edit"
    source_conversation_ids: list[str] = Field(default_factory=list)
    source_message_ids: list[str] = Field(default_factory=list)


class RestoreWrite(BaseModel):
    version_id: str


class ScratchItem(BaseModel):
    id: str | None = None
    text: str = ""
    done: bool = False


class ScratchWrite(BaseModel):
    items: list[ScratchItem] = Field(default_factory=list)


class ImportWrite(BaseModel):
    body: str = Field(min_length=1)
    occurred_at: str | None = None
    context_hint: str | None = None


class CorpusWrite(BaseModel):
    items: list[dict]


class TraitWrite(BaseModel):
    statement: str | None = None
    locked: bool | None = None
    facet_key: str | None = None
    label: str | None = None


class GovernanceWrite(BaseModel):
    governance: str


class FacetWrite(BaseModel):
    value: str | None = None
    locked: bool | None = None


class PreferenceWrite(BaseModel):
    scope: str = "global"
    pref_key: str
    value: str
    locked: bool | None = None
    origin: str = "manual"


class ReviewImportWrite(BaseModel):
    result: dict | str
    review_id: str | None = None


class ReviewAcceptWrite(BaseModel):
    review_id: str | None = None
    indexes: list[int] | None = None
    baseline: bool = False


@router.get("/spaces")
def spaces(session: dict = Depends(require_auth)):
    return list_user_spaces(session["profile_id"])


@router.post("/spaces")
def create_space(body: SpaceWrite, session: dict = Depends(require_auth)):
    try:
        return create_user_space(session["profile_id"], body.title)
    except StoreError as exc:
        _http(exc)


@router.get("/spaces/{space_id}")
def space_detail(space_id: str, session: dict = Depends(require_auth)):
    try:
        space = get_user_space(session["profile_id"], space_id)
        return {"space": space, "days": list_days(session["profile_id"], space_id)}
    except StoreError as exc:
        _http(exc)


@router.patch("/spaces/{space_id}")
def space_rename(space_id: str, body: SpaceWrite, session: dict = Depends(require_auth)):
    try:
        return rename_user_space(session["profile_id"], space_id, body.title)
    except StoreError as exc:
        _http(exc)


@router.post("/spaces/{space_id}/days")
def open_day(space_id: str, body: DayWrite, session: dict = Depends(require_auth)):
    try:
        day = get_or_create_day(session["profile_id"], space_id, body.calendar_date)
        return day_payload(session["profile_id"], day["id"])
    except StoreError as exc:
        _http(exc)


@router.get("/days/{journal_day_id}")
def read_day(journal_day_id: str, session: dict = Depends(require_auth)):
    try:
        return day_payload(session["profile_id"], journal_day_id)
    except StoreError as exc:
        _http(exc)


@router.patch("/days/{journal_day_id}/scratch")
def write_scratch(journal_day_id: str, body: ScratchWrite, session: dict = Depends(require_auth)):
    try:
        return {
            "scratch": save_day_scratch(
                session["profile_id"],
                journal_day_id,
                [{"id": item.id, "text": item.text, "done": item.done} for item in body.items],
            )
        }
    except StoreError as exc:
        _http(exc)


@router.post("/days/{journal_day_id}/conversations")
def start_conversation(journal_day_id: str, body: ConversationWrite, session: dict = Depends(require_auth)):
    try:
        return create_day_conversation(session["profile_id"], journal_day_id, body.title)
    except StoreError as exc:
        _http(exc)


@router.delete("/conversations/{conversation_id}")
def remove_conversation(conversation_id: str, session: dict = Depends(require_auth)):
    try:
        result = delete_conversation(session["profile_id"], conversation_id)
        remember_dialogue_style(session["profile_id"])
        return result
    except StoreError as exc:
        _http(exc)


@router.get("/conversations/{conversation_id}")
def read_conversation(conversation_id: str, session: dict = Depends(require_auth)):
    try:
        conv = get_conversation(session["profile_id"], conversation_id)
        return {"conversation": conv, "messages": list_messages(session["profile_id"], conversation_id)}
    except StoreError as exc:
        _http(exc)


@router.get("/egress-status")
def egress_status(session: dict = Depends(require_auth)):
    result = inspect(GatewayRequest(prompt_id=None, purpose="dialogue_turn", data_class="B"))
    return {"ready": result.allowed, "reason": result.reason, "provider": result.provider}


@router.post("/conversations/{conversation_id}/turn")
def conversation_turn(conversation_id: str, body: TurnWrite, session: dict = Depends(require_auth)):
    try:
        return visible_for_role(
            run_turn(session["profile_id"], conversation_id, body.body, message_id=body.id),
            session.get("role"),
        )
    except (StoreError, EngineError) as exc:
        _http(exc)


@router.post("/days/{journal_day_id}/generate")
def generate(journal_day_id: str, body: GenerateWrite, session: dict = Depends(require_auth)):
    try:
        return visible_for_role(
            generate_draft(
                session["profile_id"],
                journal_day_id,
                conversation_ids=body.conversation_ids,
                include_existing=body.include_existing,
                explicit=True,
            ),
            session.get("role"),
        )
    except (StoreError, PolicyError, EngineError) as exc:
        _http(exc)


@router.post("/entries")
def write_entry(body: EntryWrite, session: dict = Depends(require_auth)):
    try:
        get_day(session["profile_id"], body.journal_day_id)
        entry = save_entry(
            session["profile_id"],
            body.journal_day_id,
            body.title,
            body.body,
            origin=body.origin,
            entry_id=body.entry_id,
            source_conversation_ids=body.source_conversation_ids,
            source_message_ids=body.source_message_ids,
        )
        remember_journal_entry(
            session["profile_id"],
            entry["id"],
            entry.get("body") or "",
            origin=body.origin,
        )
        ingest_journal(
            session["profile_id"],
            entry["id"],
            entry.get("body") or "",
            origin=body.origin,
        )
        return entry
    except (StoreError, PolicyError) as exc:
        _http(exc)


@router.get("/entries/{entry_id}")
def read_entry(entry_id: str, session: dict = Depends(require_auth)):
    try:
        entry = get_entry(session["profile_id"], entry_id)
        entry["media"] = list_media(session["profile_id"], entry_id)
        entry["versions"] = list_versions(session["profile_id"], entry_id)
        return entry
    except StoreError as exc:
        _http(exc)


@router.get("/entries/{entry_id}/versions")
def entry_versions(entry_id: str, session: dict = Depends(require_auth)):
    try:
        return list_versions(session["profile_id"], entry_id)
    except StoreError as exc:
        _http(exc)


@router.post("/entries/{entry_id}/restore")
def entry_restore(entry_id: str, body: RestoreWrite, session: dict = Depends(require_auth)):
    try:
        entry = restore_entry(session["profile_id"], entry_id, body.version_id)
        remember_journal_entry(
            session["profile_id"],
            entry["id"],
            entry.get("body") or "",
            origin=entry.get("origin"),
        )
        ingest_journal(
            session["profile_id"],
            entry["id"],
            entry.get("body") or "",
            origin=entry.get("origin"),
        )
        return entry
    except StoreError as exc:
        _http(exc)


@router.delete("/entries/{entry_id}")
def entry_delete(entry_id: str, session: dict = Depends(require_auth)):
    try:
        return soft_delete_entry(session["profile_id"], entry_id)
    except StoreError as exc:
        _http(exc)


@router.post("/entries/{entry_id}/media")
async def entry_media(entry_id: str, file: UploadFile = File(...), session: dict = Depends(require_auth)):
    try:
        data = await file.read()
        return save_media(
            session["profile_id"],
            entry_id,
            file.filename or "media",
            file.content_type or "",
            data,
        )
    except StoreError as exc:
        _http(exc)


@router.get("/media/{media_id}")
def read_media(media_id: str, session: dict = Depends(require_auth)):
    try:
        row, path = get_media(session["profile_id"], media_id)
        return FileResponse(path, media_type=row["content_type"], filename=row["filename"])
    except StoreError as exc:
        _http(exc)


@router.delete("/media/{media_id}")
def remove_media(media_id: str, session: dict = Depends(require_auth)):
    try:
        return delete_media(session["profile_id"], media_id)
    except StoreError as exc:
        _http(exc)


@router.get("/writing-profile")
def writing_profile(session: dict = Depends(require_auth)):
    return get_profile(session["profile_id"])


@router.patch("/writing-profile")
def writing_patch(body: GovernanceWrite, session: dict = Depends(require_auth)):
    try:
        return set_writing_governance(session["profile_id"], body.governance)
    except StoreError as exc:
        _http(exc)


@router.patch("/writing-profile/facets/{facet_key}")
def writing_facet(facet_key: str, body: FacetWrite, session: dict = Depends(require_auth)):
    try:
        return update_facet(
            session["profile_id"],
            facet_key,
            value=body.value,
            locked=body.locked,
        )
    except StoreError as exc:
        _http(exc)


@router.patch("/writing-profile/traits/{slug}")
def writing_trait(slug: str, body: TraitWrite, session: dict = Depends(require_auth)):
    try:
        return update_trait(
            session["profile_id"],
            slug,
            statement=body.statement,
            locked=body.locked,
            facet_key=body.facet_key,
            label=body.label,
        )
    except StoreError as exc:
        _http(exc)


@router.post("/writing-profile/suggestions/{suggestion_id}/accept")
def writing_accept(suggestion_id: str, session: dict = Depends(require_auth)):
    try:
        return accept_writing_suggestion(session["profile_id"], suggestion_id)
    except StoreError as exc:
        _http(exc)


@router.post("/writing-profile/suggestions/{suggestion_id}/reject")
def writing_reject(suggestion_id: str, session: dict = Depends(require_auth)):
    try:
        return reject_writing_suggestion(session["profile_id"], suggestion_id)
    except StoreError as exc:
        _http(exc)


@router.post("/writing-profile/import")
def writing_import(body: ImportWrite, session: dict = Depends(require_auth)):
    try:
        return ingest_import(
            session["profile_id"],
            body.body,
            occurred_at=body.occurred_at,
            context_hint=body.context_hint,
        )
    except StoreError as exc:
        _http(exc)


@router.post("/writing-profile/corpus")
def writing_corpus(body: CorpusWrite, session: dict = Depends(require_auth)):
    try:
        return import_corpus(session["profile_id"], body.items)
    except StoreError as exc:
        _http(exc)


@router.get("/writing-profile/corpus")
def writing_corpus_list(session: dict = Depends(require_auth)):
    return {"items": list_corpus(session["profile_id"])}


@router.post("/writing-profile/rebuild")
def writing_rebuild(session: dict = Depends(require_auth)):
    return rebuild_brief(session["profile_id"])


@router.get("/writing-profile/review")
def writing_review_status(session: dict = Depends(require_auth)):
    return review_status(session["profile_id"])


@router.post("/writing-profile/review/paste")
def writing_review_paste(session: dict = Depends(require_auth)):
    try:
        return open_paste_review(session["profile_id"])
    except StoreError as exc:
        _http(exc)


@router.post("/writing-profile/initial-build/paste")
def writing_initial_build_paste(session: dict = Depends(require_auth)):
    try:
        return open_paste_review(session["profile_id"], mode="initial_build")
    except StoreError as exc:
        _http(exc)


@router.post("/writing-profile/review/api")
def writing_review_api(session: dict = Depends(require_auth)):
    try:
        return run_api_review(session["profile_id"])
    except (StoreError, EngineError) as exc:
        _http(exc)


@router.post("/writing-profile/initial-build/api")
def writing_initial_build_api(session: dict = Depends(require_auth)):
    try:
        return run_api_review(session["profile_id"], mode="initial_build")
    except (StoreError, EngineError) as exc:
        _http(exc)


@router.post("/writing-profile/review/import")
def writing_review_import(body: ReviewImportWrite, session: dict = Depends(require_auth)):
    try:
        return import_review_result(session["profile_id"], body.result, review_id=body.review_id)
    except StoreError as exc:
        _http(exc)


@router.post("/writing-profile/review/accept")
def writing_review_accept(body: ReviewAcceptWrite, session: dict = Depends(require_auth)):
    try:
        return accept_proposal(
            session["profile_id"],
            body.review_id,
            indexes=body.indexes,
            baseline=body.baseline,
        )
    except StoreError as exc:
        _http(exc)


@router.post("/writing-profile/review/reject")
def writing_review_reject(body: ReviewAcceptWrite, session: dict = Depends(require_auth)):
    try:
        return reject_proposal(session["profile_id"], body.review_id, indexes=body.indexes)
    except StoreError as exc:
        _http(exc)


@router.get("/writing-profile/export")
def writing_export(session: dict = Depends(require_auth)):
    return export_writing_document(session["profile_id"])


@router.post("/writing-profile/restore")
def writing_restore(body: dict, session: dict = Depends(require_auth)):
    try:
        return restore_writing_document(session["profile_id"], body)
    except StoreError as exc:
        _http(exc)


@router.get("/interaction-profile")
def interaction_profile(session: dict = Depends(require_auth)):
    return get_interaction_profile(session["profile_id"])


@router.patch("/interaction-profile")
def interaction_patch(body: GovernanceWrite, session: dict = Depends(require_auth)):
    try:
        return set_interaction_governance(session["profile_id"], body.governance)
    except StoreError as exc:
        _http(exc)


@router.patch("/interaction-profile/preferences")
def interaction_pref(body: PreferenceWrite, session: dict = Depends(require_auth)):
    try:
        return upsert_preference(
            session["profile_id"],
            scope=body.scope,
            pref_key=body.pref_key,
            value=body.value,
            origin=body.origin if body.origin in {"explicit", "manual"} else "manual",
            locked=body.locked,
        )
    except StoreError as exc:
        _http(exc)


@router.post("/interaction-profile/suggestions/{suggestion_id}/accept")
def interaction_accept(suggestion_id: str, session: dict = Depends(require_auth)):
    try:
        return accept_interaction_suggestion(session["profile_id"], suggestion_id)
    except StoreError as exc:
        _http(exc)


@router.post("/interaction-profile/suggestions/{suggestion_id}/reject")
def interaction_reject(suggestion_id: str, session: dict = Depends(require_auth)):
    try:
        return reject_interaction_suggestion(session["profile_id"], suggestion_id)
    except StoreError as exc:
        _http(exc)


@router.get("/interaction-profile/export")
def interaction_export(session: dict = Depends(require_auth)):
    return export_interaction_document(session["profile_id"])


@router.post("/interaction-profile/restore")
def interaction_restore(body: dict, session: dict = Depends(require_auth)):
    try:
        return restore_interaction_document(session["profile_id"], body)
    except StoreError as exc:
        _http(exc)


@router.get("/profiles/export")
def profiles_export(session: dict = Depends(require_auth)):
    return export_bundle(session["profile_id"])


@router.post("/profiles/restore")
def profiles_restore(body: dict, session: dict = Depends(require_auth)):
    try:
        return restore_bundle(session["profile_id"], body)
    except StoreError as exc:
        _http(exc)