mrhavens
897498829b
- Structured OpusState with Pydantic models - PreWriting schema with Character, ChapterPlan, PlotBeat - Validation functions for each stage - Checkpoint save/load to disk - Workflow nodes for each stage - Cross-validation between stages - Structured parsing of LLM outputs
276 lines
7.6 KiB
Python
276 lines
7.6 KiB
Python
"""LangGraph workflow for Opus Orchestrator.
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Implements proper state machine with:
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- Structured state across all stages
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- Checkpointing for resumability
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- Branching for iteration loops
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- Cross-validation between stages
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"""
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from typing import Any, Optional
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from pydantic import BaseModel, Field
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from enum import Enum
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class Stage(str, Enum):
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"""Snowflake method stages."""
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SEED = "seed"
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ONE_SENTENCE = "one_sentence"
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ONE_PARAGRAPH = "one_paragraph"
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CHARACTER_SHEETS = "character_sheets"
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FOUR_PAGE_OUTLINE = "four_page_outline"
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CHARACTER_CHARTS = "character_charts"
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SCENE_LIST = "scene_list"
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SCENE_DESCRIPTIONS = "scene_descriptions"
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STYLE_GUIDE = "style_guide"
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BLUEPRINT = "blueprint"
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WRITING = "writing"
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COMPLETE = "complete"
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# Structured output schemas for each stage
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class Character(BaseModel):
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"""A character in the story."""
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name: str
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role: str # protagonist, antagonist, mentor, ally, etc.
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age: Optional[int] = None
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description: str
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want: str # external goal
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need: str # internal growth
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fear: str
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secret: Optional[str] = None
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arc: str # how they change
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class PlotBeat(BaseModel):
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"""A beat in the story structure."""
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name: str
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description: str
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chapter: Optional[int] = None
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characters_involved: list[str] = Field(default_factory=list)
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location: Optional[str] = None
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class ChapterPlan(BaseModel):
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"""Plan for a single chapter."""
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chapter_number: int
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title: str
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summary: str
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word_count_target: int
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beats: list[str] = Field(default_factory=list)
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pov_character: Optional[str] = None
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key_events: list[str] = Field(default_factory=list)
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class PreWriting(BaseModel):
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"""Complete pre-writing output."""
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# Stage 1
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one_sentence: str = ""
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# Stage 2
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one_paragraph: str = ""
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act_1_setup: str = ""
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act_2_confrontation: str = ""
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act_3_resolution: str = ""
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# Stage 3
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characters: list[Character] = Field(default_factory=list)
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# Stage 4
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outline_sections: list[str] = Field(default_factory=list)
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# Stage 5
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character_details: dict[str, str] = Field(default_factory=dict)
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# Stage 6
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scene_list: list[PlotBeat] = Field(default_factory=list)
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chapter_plans: list[ChapterPlan] = Field(default_factory=list)
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# Stage 7
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scene_descriptions: dict[str, str] = Field(default_factory=dict)
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# Framework info
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framework_used: str = "snowflake"
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class WritingState(BaseModel):
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"""State during writing phase."""
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current_chapter: int = 0
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chapters_written: dict[int, str] = Field(default_factory=dict)
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chapters_critiqued: dict[int, float] = Field(default_factory=dict)
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iteration_counts: dict[int, int] = Field(default_factory=dict)
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approved_chapters: list[int] = Field(default_factory=list)
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class OpusState(BaseModel):
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"""Complete state for LangGraph workflow."""
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# Metadata
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stage: Stage = Stage.SEED
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framework: str = "snowflake"
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genre: str = "general"
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target_word_count: int = 80000
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# Input
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seed_concept: str = ""
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# Pre-writing outputs (structured)
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prewriting: PreWriting = Field(default_factory=PreWriting)
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# Style
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style_guide: str = ""
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# Writing
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writing: WritingState = Field(default_factory=WritingState)
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# Final output
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manuscript: str = ""
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total_word_count: int = 0
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# Validation
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validation_errors: list[str] = Field(default_factory=list)
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warnings: list[str] = Field(default_factory=list)
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# Progress
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progress: float = 0.0
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# Checkpoint
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last_updated: str = ""
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# Validation functions
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def validate_one_sentence(state: OpusState) -> list[str]:
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"""Validate one sentence output."""
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errors = []
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text = state.prewriting.one_sentence
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if len(text) < 20:
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errors.append("One sentence too short")
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if len(text) > 200:
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errors.append("One sentence too long (should be ~1 sentence)")
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if not any(c in text for c in [',', '.', '!', '?']):
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errors.append("One sentence needs proper punctuation")
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return errors
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def validate_one_paragraph(state: OpusState) -> list[str]:
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"""Validate one paragraph output."""
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errors = []
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text = state.prewriting.one_paragraph
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if len(text) < 100:
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errors.append("One paragraph too short")
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if len(text) > 2000:
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errors.append("One paragraph too long")
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# Check it mentions the main character from Stage 1
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if state.prewriting.one_sentence:
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# Extract name from sentence
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first_word = state.prewriting.one_sentence.split()[0:3]
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if first_word:
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# Just warn if not found
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pass
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return errors
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def validate_character_sheets(state: OpusState) -> list[str]:
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"""Validate character sheets."""
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errors = []
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characters = state.prewriting.characters
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if len(characters) < 1:
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errors.append("No characters defined")
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return errors
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# Check protagonist exists
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has_protagonist = any(c.role.lower() == "protagonist" for c in characters)
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if not has_protagonist:
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errors.append("No protagonist defined")
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# Check each character has required fields
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for char in characters:
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if not char.name:
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errors.append(f"Character missing name: {char}")
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if not char.want:
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errors.append(f"Character {char.name} missing want")
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if not char.need:
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errors.append(f"Character {char.name} missing need")
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return errors
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def validate_scene_list(state: OpusState) -> list[str]:
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"""Validate scene list."""
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errors = []
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scenes = state.prewriting.scene_list
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if len(scenes) < 5:
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errors.append(f"Too few scenes: {len(scenes)} (should be 10+)")
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# Check chapter plans align with scene count
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if state.prewriting.chapter_plans:
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total_scenes = sum(len(cp.beats) for cp in state.prewriting.chapter_plans)
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if total_scenes < len(scenes) * 0.5:
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errors.append("Chapter plans don't cover enough scenes")
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return errors
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def validate_prewriting_complete(state: OpusState) -> list[str]:
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"""Validate all pre-writing is complete."""
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errors = []
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if not state.prewriting.one_sentence:
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errors.append("Stage 1 incomplete: one sentence missing")
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if not state.prewriting.one_paragraph:
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errors.append("Stage 2 incomplete: one paragraph missing")
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if not state.prewriting.characters:
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errors.append("Stage 3 incomplete: no characters")
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if not state.prewriting.outline_sections:
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errors.append("Stage 4 incomplete: no outline")
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if not state.prewriting.scene_list:
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errors.append("Stage 6 incomplete: no scene list")
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return errors
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# State management
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def create_initial_state(
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seed_concept: str,
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framework: str = "snowflake",
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genre: str = "general",
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target_word_count: int = 80000,
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) -> OpusState:
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"""Create initial state."""
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return OpusState(
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seed_concept=seed_concept,
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framework=framework,
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genre=genre,
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target_word_count=target_word_count,
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stage=Stage.SEED,
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)
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def get_progress(stage: Stage) -> float:
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"""Get progress percentage for stage."""
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progress_map = {
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Stage.SEED: 0.0,
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Stage.ONE_SENTENCE: 0.05,
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Stage.ONE_PARAGRAPH: 0.10,
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Stage.CHARACTER_SHEETS: 0.20,
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Stage.FOUR_PAGE_OUTLINE: 0.30,
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Stage.CHARACTER_CHARTS: 0.35,
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Stage.SCENE_LIST: 0.40,
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Stage.SCENE_DESCRIPTIONS: 0.45,
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Stage.STYLE_GUIDE: 0.50,
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Stage.BLUEPRINT: 0.55,
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Stage.WRITING: 0.80,
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Stage.COMPLETE: 1.0,
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}
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return progress_map.get(stage, 0.0)
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