from __future__ import annotations

from django.contrib import admin

from control_plane.authoring.models import (
    BookRun,
    BookStateVersion,
    SceneContextCitation,
    SceneIdeation,
    Series,
    SourceDocument,
    SourceDocumentVersion,
    SourcePassage,
    StandaloneScene,
    Work,
)


@admin.register(Series)
class SeriesAdmin(admin.ModelAdmin):
    list_display = ("title", "slug", "updated_at")
    search_fields = ("title", "slug")


@admin.register(Work)
class WorkAdmin(admin.ModelAdmin):
    list_display = (
        "title",
        "series",
        "work_type",
        "sequence",
        "current_book_state",
        "updated_at",
    )
    list_filter = ("work_type", "series")
    search_fields = ("title", "slug", "series__title")


class SourceDocumentVersionInline(admin.TabularInline):
    model = SourceDocumentVersion
    fields = ("version", "authority", "source_path", "source_sha256", "created_at")
    readonly_fields = fields
    extra = 0
    show_change_link = True


@admin.register(SourceDocument)
class SourceDocumentAdmin(admin.ModelAdmin):
    list_display = ("title", "work", "document_type", "logical_key", "updated_at")
    list_filter = ("document_type", "work__series", "work")
    search_fields = ("title", "logical_key", "work__title")
    inlines = (SourceDocumentVersionInline,)

    def get_readonly_fields(self, request, obj=None):
        return tuple(field.name for field in self.model._meta.fields)

    def has_add_permission(self, request):
        return False

    def has_delete_permission(self, request, obj=None):
        return False


@admin.register(SourceDocumentVersion)
class SourceDocumentVersionAdmin(admin.ModelAdmin):
    list_display = ("document", "version", "authority", "byte_size", "created_at")
    list_filter = ("authority", "document__document_type", "document__work")
    search_fields = ("document__title", "document__logical_key", "source_path", "source_sha256")
    def get_readonly_fields(self, request, obj=None):
        return tuple(field.name for field in self.model._meta.fields)

    def has_add_permission(self, request):
        return False

    def has_delete_permission(self, request, obj=None):
        return False


@admin.register(SourcePassage)
class SourcePassageAdmin(admin.ModelAdmin):
    list_display = ("document_version", "ordinal", "start_line", "end_line", "sha256")
    search_fields = ("content", "document_version__document__logical_key")
    def get_readonly_fields(self, request, obj=None):
        return tuple(field.name for field in self.model._meta.fields)

    def has_add_permission(self, request):
        return False

    def has_delete_permission(self, request, obj=None):
        return False


class SceneContextCitationInline(admin.TabularInline):
    model = SceneContextCitation
    fields = ("rank", "passage", "score", "reason")
    readonly_fields = fields
    extra = 0


@admin.register(StandaloneScene)
class StandaloneSceneAdmin(admin.ModelAdmin):
    list_display = (
        "title",
        "work",
        "book_state",
        "book_chapter_key",
        "revision",
        "status",
        "target_words",
        "word_count",
        "updated_at",
    )
    list_filter = ("status", "work__series", "work")
    search_fields = ("title", "scene_key", "brief", "prose")
    inlines = (SceneContextCitationInline,)

    def get_readonly_fields(self, request, obj=None):
        return tuple(field.name for field in self.model._meta.fields)

    def has_add_permission(self, request):
        return False

    def has_delete_permission(self, request, obj=None):
        return False


@admin.register(SceneIdeation)
class SceneIdeationAdmin(admin.ModelAdmin):
    list_display = (
        "work",
        "book_state",
        "target_book",
        "candidate_count",
        "context_pack_sha256",
        "created_at",
    )
    list_filter = ("work__series", "work")
    search_fields = ("target_book", "focus", "work__title")

    def get_readonly_fields(self, request, obj=None):
        return tuple(field.name for field in self.model._meta.fields)

    def has_add_permission(self, request):
        return False

    def has_delete_permission(self, request, obj=None):
        return False


@admin.register(BookStateVersion)
class BookStateVersionAdmin(admin.ModelAdmin):
    list_display = ("work", "version", "status", "sha256", "created_at")
    list_filter = ("status", "work__series", "work")
    search_fields = ("work__title", "sha256", "approved_by")

    def get_readonly_fields(self, request, obj=None):
        return tuple(field.name for field in self.model._meta.fields)

    def has_add_permission(self, request):
        return False

    def has_delete_permission(self, request, obj=None):
        return False


@admin.register(BookRun)
class BookRunAdmin(admin.ModelAdmin):
    list_display = (
        "book_state",
        "status",
        "current_chapter_key",
        "started_at",
        "finished_at",
        "updated_at",
    )
    list_filter = ("status", "book_state__work")
    search_fields = ("book_state__work__title", "current_chapter_key", "failure_reason")

    def get_readonly_fields(self, request, obj=None):
        return tuple(field.name for field in self.model._meta.fields)

    def has_add_permission(self, request):
        return False

    def has_delete_permission(self, request, obj=None):
        return False