from __future__ import annotations

import sqlite3
from collections.abc import Iterable
from contextlib import closing

from src.domain.contracts import (
    AgentJobErrorCategory,
    AgentJobStatus,
    AgentJobType,
    ArticleWorkflowStatus,
    AssetStatus,
    AssetType,
    ClaimRiskLevel,
    ClaimSupportStatus,
    PlanReviewStatus,
    PublishingStatus,
    Role,
    ScriptConfigVersionStatus,
)


def _quoted_values(values: Iterable[str]) -> str:
    return ", ".join(f"'{value}'" for value in values)


ROLE_VALUES = _quoted_values(role.value for role in Role)
ARTICLE_STATUS_VALUES = _quoted_values(status.value for status in ArticleWorkflowStatus)
PUBLISHING_STATUS_VALUES = _quoted_values(status.value for status in PublishingStatus)
SCRIPT_CONFIG_STATUS_VALUES = _quoted_values(
    status.value for status in ScriptConfigVersionStatus
)
PLAN_REVIEW_STATUS_VALUES = _quoted_values(status.value for status in PlanReviewStatus)
CLAIM_SUPPORT_STATUS_VALUES = _quoted_values(
    status.value for status in ClaimSupportStatus
)
CLAIM_RISK_LEVEL_VALUES = _quoted_values(level.value for level in ClaimRiskLevel)
ASSET_TYPE_VALUES = _quoted_values(asset_type.value for asset_type in AssetType)
ASSET_STATUS_VALUES = _quoted_values(status.value for status in AssetStatus)
AGENT_JOB_TYPE_VALUES = _quoted_values(job_type.value for job_type in AgentJobType)
AGENT_JOB_STATUS_VALUES = _quoted_values(status.value for status in AgentJobStatus)
AGENT_JOB_ERROR_CATEGORY_VALUES = _quoted_values(
    category.value for category in AgentJobErrorCategory
)


POSTGRES_SCHEMA_STATEMENTS: tuple[str, ...] = (
    'CREATE EXTENSION IF NOT EXISTS "pgcrypto"',
    f"""
    CREATE TABLE IF NOT EXISTS users (
        id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
        email TEXT NOT NULL UNIQUE,
        display_name TEXT NOT NULL,
        role TEXT NOT NULL CHECK (role IN ({ROLE_VALUES})),
        created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
        updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
    )
    """,
    """
    CREATE TABLE IF NOT EXISTS target_sites (
        id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
        name TEXT NOT NULL,
        slug TEXT NOT NULL UNIQUE,
        publishing_type TEXT NOT NULL DEFAULT 'git_next',
        default_language TEXT NOT NULL DEFAULT 'en',
        brand_voice TEXT NOT NULL,
        audience TEXT NOT NULL,
        seo_rules JSONB NOT NULL DEFAULT '{}'::jsonb,
        visual_rules JSONB NOT NULL DEFAULT '{}'::jsonb,
        source_rules JSONB NOT NULL DEFAULT '{}'::jsonb,
        publishing_rules JSONB NOT NULL DEFAULT '{}'::jsonb,
        active_script_config_version_id UUID,
        created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
        updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
    )
    """,
    f"""
    CREATE TABLE IF NOT EXISTS script_config_versions (
        id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
        target_site_id UUID NOT NULL REFERENCES target_sites(id) ON DELETE CASCADE,
        version INTEGER NOT NULL,
        status TEXT NOT NULL CHECK (status IN ({SCRIPT_CONFIG_STATUS_VALUES})),
        created_by UUID NOT NULL REFERENCES users(id),
        created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
        updated_at TIMESTAMPTZ NOT NULL DEFAULT now(),
        diff JSONB NOT NULL DEFAULT '{{}}'::jsonb,
        rollback_target_version_id UUID REFERENCES script_config_versions(id),
        activated_at TIMESTAMPTZ,
        publishing_yaml TEXT NOT NULL,
        publishing_yaml_hash TEXT NOT NULL,
        transform_script TEXT NOT NULL,
        transform_script_hash TEXT NOT NULL,
        UNIQUE (target_site_id, version)
    )
    """,
    f"""
    CREATE TABLE IF NOT EXISTS articles (
        id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
        target_site_id UUID NOT NULL REFERENCES target_sites(id),
        status TEXT NOT NULL CHECK (status IN ({ARTICLE_STATUS_VALUES})),
        publishing_status TEXT NOT NULL CHECK (
            publishing_status IN ({PUBLISHING_STATUS_VALUES})
        ),
        brief_description TEXT NOT NULL,
        working_title TEXT,
        language TEXT NOT NULL DEFAULT 'en',
        content_type TEXT NOT NULL DEFAULT 'longform_guide',
        primary_keyword TEXT,
        assigned_editor_id UUID REFERENCES users(id),
        created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
        updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
    )
    """,
    """
    CREATE TABLE IF NOT EXISTS boundary_questions (
        id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
        article_id UUID NOT NULL REFERENCES articles(id) ON DELETE CASCADE,
        sort_order INTEGER NOT NULL,
        category TEXT NOT NULL DEFAULT 'general',
        question TEXT NOT NULL,
        answer TEXT,
        is_required BOOLEAN NOT NULL DEFAULT true,
        created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
        updated_at TIMESTAMPTZ NOT NULL DEFAULT now(),
        UNIQUE (article_id, sort_order)
    )
    """,
    "ALTER TABLE boundary_questions ADD COLUMN IF NOT EXISTS category TEXT NOT NULL DEFAULT 'general'",
    f"""
    CREATE TABLE IF NOT EXISTS article_plans (
        id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
        article_id UUID NOT NULL REFERENCES articles(id) ON DELETE CASCADE,
        version INTEGER NOT NULL,
        status TEXT NOT NULL CHECK (status IN ({PLAN_REVIEW_STATUS_VALUES})),
        title_options JSONB NOT NULL DEFAULT '[]'::jsonb,
        recommended_title TEXT,
        reader_persona TEXT,
        search_intent TEXT,
        thesis TEXT,
        claims_to_prove JSONB NOT NULL DEFAULT '[]'::jsonb,
        evidence_needs JSONB NOT NULL DEFAULT '[]'::jsonb,
        visual_needs JSONB NOT NULL DEFAULT '[]'::jsonb,
        seo_notes JSONB NOT NULL DEFAULT '[]'::jsonb,
        source_requirements JSONB NOT NULL DEFAULT '[]'::jsonb,
        excluded_sources JSONB NOT NULL DEFAULT '[]'::jsonb,
        tone TEXT,
        audience TEXT,
        risks JSONB NOT NULL DEFAULT '[]'::jsonb,
        created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
        UNIQUE (article_id, version)
    )
    """,
    "ALTER TABLE article_plans ADD COLUMN IF NOT EXISTS title_options JSONB NOT NULL DEFAULT '[]'::jsonb",
    "ALTER TABLE article_plans ADD COLUMN IF NOT EXISTS reader_persona TEXT",
    "ALTER TABLE article_plans ADD COLUMN IF NOT EXISTS evidence_needs JSONB NOT NULL DEFAULT '[]'::jsonb",
    "ALTER TABLE article_plans ADD COLUMN IF NOT EXISTS visual_needs JSONB NOT NULL DEFAULT '[]'::jsonb",
    "ALTER TABLE article_plans ADD COLUMN IF NOT EXISTS seo_notes JSONB NOT NULL DEFAULT '[]'::jsonb",
    "ALTER TABLE article_plans ADD COLUMN IF NOT EXISTS source_requirements JSONB NOT NULL DEFAULT '[]'::jsonb",
    "ALTER TABLE article_plans ADD COLUMN IF NOT EXISTS excluded_sources JSONB NOT NULL DEFAULT '[]'::jsonb",
    "ALTER TABLE article_plans ADD COLUMN IF NOT EXISTS tone TEXT",
    "ALTER TABLE article_plans ADD COLUMN IF NOT EXISTS audience TEXT",
    """
    CREATE TABLE IF NOT EXISTS plan_sections (
        id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
        article_plan_id UUID NOT NULL REFERENCES article_plans(id) ON DELETE CASCADE,
        sort_order INTEGER NOT NULL,
        heading TEXT NOT NULL,
        purpose TEXT,
        key_points JSONB NOT NULL DEFAULT '[]'::jsonb,
        evidence_needs JSONB NOT NULL DEFAULT '[]'::jsonb,
        claims_to_support JSONB NOT NULL DEFAULT '[]'::jsonb,
        target_word_count INTEGER,
        UNIQUE (article_plan_id, sort_order)
    )
    """,
    "ALTER TABLE plan_sections ADD COLUMN IF NOT EXISTS key_points JSONB NOT NULL DEFAULT '[]'::jsonb",
    "ALTER TABLE plan_sections ADD COLUMN IF NOT EXISTS evidence_needs JSONB NOT NULL DEFAULT '[]'::jsonb",
    """
    CREATE TABLE IF NOT EXISTS evidence_items (
        id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
        article_id UUID NOT NULL REFERENCES articles(id) ON DELETE CASCADE,
        source_title TEXT NOT NULL,
        source_url TEXT NOT NULL,
        source_type TEXT NOT NULL,
        source_quality_score NUMERIC(4, 3) NOT NULL,
        summary TEXT NOT NULL,
        supports_claims JSONB NOT NULL DEFAULT '[]'::jsonb,
        artifact_manifest_id UUID,
        retrieved_at TIMESTAMPTZ NOT NULL DEFAULT now(),
        review_status TEXT NOT NULL DEFAULT 'PENDING'
    )
    """,
    "ALTER TABLE evidence_items ADD COLUMN IF NOT EXISTS review_status TEXT NOT NULL DEFAULT 'PENDING'",
    f"""
    CREATE TABLE IF NOT EXISTS claims (
        id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
        article_id UUID NOT NULL REFERENCES articles(id) ON DELETE CASCADE,
        section_id UUID REFERENCES plan_sections(id) ON DELETE SET NULL,
        claim_text TEXT NOT NULL,
        support_status TEXT NOT NULL CHECK (
            support_status IN ({CLAIM_SUPPORT_STATUS_VALUES})
        ),
        risk_level TEXT NOT NULL CHECK (risk_level IN ({CLAIM_RISK_LEVEL_VALUES})),
        evidence_item_ids JSONB NOT NULL DEFAULT '[]'::jsonb,
        created_at TIMESTAMPTZ NOT NULL DEFAULT now()
    )
    """,
    f"""
    CREATE TABLE IF NOT EXISTS article_drafts (
        id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
        article_id UUID NOT NULL REFERENCES articles(id) ON DELETE CASCADE,
        version INTEGER NOT NULL,
        title TEXT NOT NULL,
        slug TEXT NOT NULL,
        meta_title TEXT,
        meta_description TEXT,
        body_object_key TEXT,
        status TEXT NOT NULL CHECK (status IN ({ARTICLE_STATUS_VALUES})),
        created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
        updated_at TIMESTAMPTZ NOT NULL DEFAULT now(),
        UNIQUE (article_id, version)
    )
    """,
    f"""
    CREATE TABLE IF NOT EXISTS assets (
        id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
        article_id UUID NOT NULL REFERENCES articles(id) ON DELETE CASCADE,
        asset_type TEXT NOT NULL CHECK (asset_type IN ({ASSET_TYPE_VALUES})),
        title TEXT NOT NULL,
        prompt TEXT,
        file_url TEXT,
        alt_text TEXT,
        caption TEXT,
        status TEXT NOT NULL CHECK (status IN ({ASSET_STATUS_VALUES})),
        created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
        updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
    )
    """,
    f"""
    CREATE TABLE IF NOT EXISTS workflow_events (
        id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
        article_id UUID NOT NULL REFERENCES articles(id) ON DELETE CASCADE,
        event_type TEXT NOT NULL,
        from_status TEXT CHECK (from_status IN ({ARTICLE_STATUS_VALUES})),
        to_status TEXT CHECK (to_status IN ({ARTICLE_STATUS_VALUES})),
        actor_user_id UUID REFERENCES users(id),
        payload JSONB NOT NULL DEFAULT '{{}}'::jsonb,
        created_at TIMESTAMPTZ NOT NULL DEFAULT now()
    )
    """,
    f"""
    CREATE TABLE IF NOT EXISTS agent_jobs (
        id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
        article_id UUID REFERENCES articles(id) ON DELETE SET NULL,
        parent_job_id UUID REFERENCES agent_jobs(id) ON DELETE SET NULL,
        attempt INTEGER NOT NULL DEFAULT 1,
        job_type TEXT NOT NULL CHECK (job_type IN ({AGENT_JOB_TYPE_VALUES})),
        agent_profile TEXT NOT NULL,
        status TEXT NOT NULL CHECK (status IN ({AGENT_JOB_STATUS_VALUES})),
        workspace_path TEXT,
        input_files JSONB NOT NULL DEFAULT '[]'::jsonb,
        output_files JSONB NOT NULL DEFAULT '[]'::jsonb,
        error_category TEXT CHECK (
            error_category IS NULL
            OR error_category IN ({AGENT_JOB_ERROR_CATEGORY_VALUES})
        ),
        error_message TEXT,
        stdout TEXT NOT NULL DEFAULT '',
        stderr TEXT NOT NULL DEFAULT '',
        exit_code INTEGER,
        duration_ms INTEGER,
        queued_at TIMESTAMPTZ NOT NULL DEFAULT now(),
        started_at TIMESTAMPTZ,
        finished_at TIMESTAMPTZ
    )
    """,
    "ALTER TABLE agent_jobs ADD COLUMN IF NOT EXISTS parent_job_id UUID REFERENCES agent_jobs(id) ON DELETE SET NULL",
    "ALTER TABLE agent_jobs ADD COLUMN IF NOT EXISTS attempt INTEGER NOT NULL DEFAULT 1",
    "ALTER TABLE agent_jobs ADD COLUMN IF NOT EXISTS stdout TEXT NOT NULL DEFAULT ''",
    "ALTER TABLE agent_jobs ADD COLUMN IF NOT EXISTS stderr TEXT NOT NULL DEFAULT ''",
    "ALTER TABLE agent_jobs ADD COLUMN IF NOT EXISTS exit_code INTEGER",
    "ALTER TABLE agent_jobs ADD COLUMN IF NOT EXISTS duration_ms INTEGER",
    """
    CREATE TABLE IF NOT EXISTS research_run_manifests (
        id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
        article_id UUID NOT NULL REFERENCES articles(id) ON DELETE CASCADE,
        agent_job_id UUID NOT NULL REFERENCES agent_jobs(id) ON DELETE CASCADE,
        s3_prefix TEXT NOT NULL,
        source_urls JSONB NOT NULL DEFAULT '[]'::jsonb,
        object_keys JSONB NOT NULL DEFAULT '[]'::jsonb,
        content_hashes JSONB NOT NULL DEFAULT '[]'::jsonb,
        artifact_types JSONB NOT NULL DEFAULT '[]'::jsonb,
        metadata_references JSONB NOT NULL DEFAULT '[]'::jsonb,
        artifacts JSONB NOT NULL DEFAULT '[]'::jsonb,
        created_at TIMESTAMPTZ NOT NULL DEFAULT now()
    )
    """,
    f"""
    CREATE TABLE IF NOT EXISTS publish_commits (
        id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
        article_id UUID NOT NULL REFERENCES articles(id) ON DELETE CASCADE,
        target_site_id UUID NOT NULL REFERENCES target_sites(id),
        repository_url TEXT NOT NULL,
        branch TEXT NOT NULL,
        commit_sha TEXT,
        content_bundle_manifest JSONB NOT NULL DEFAULT '{{}}'::jsonb,
        status TEXT NOT NULL CHECK (status IN ({PUBLISHING_STATUS_VALUES})),
        deployment_status TEXT,
        created_at TIMESTAMPTZ NOT NULL DEFAULT now()
    )
    """,
    f"""
    CREATE TABLE IF NOT EXISTS prompt_versions (
        id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
        prompt_key TEXT NOT NULL,
        version INTEGER NOT NULL,
        status TEXT NOT NULL CHECK (status IN ({SCRIPT_CONFIG_STATUS_VALUES})),
        body TEXT NOT NULL,
        created_by UUID NOT NULL REFERENCES users(id),
        created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
        activated_at TIMESTAMPTZ,
        diff JSONB NOT NULL DEFAULT '{{}}'::jsonb,
        UNIQUE (prompt_key, version)
    )
    """,
    f"""
    CREATE TABLE IF NOT EXISTS script_config_version_events (
        id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
        target_site_id UUID NOT NULL REFERENCES target_sites(id) ON DELETE CASCADE,
        version_id UUID NOT NULL REFERENCES script_config_versions(id) ON DELETE CASCADE,
        event_type TEXT NOT NULL,
        actor_user_id UUID REFERENCES users(id),
        payload JSONB NOT NULL DEFAULT '{{}}'::jsonb,
        created_at TIMESTAMPTZ NOT NULL DEFAULT now()
    )
    """,
    "CREATE INDEX IF NOT EXISTS idx_target_sites_slug ON target_sites (slug)",
    """
    CREATE INDEX IF NOT EXISTS idx_articles_dashboard
    ON articles (target_site_id, status, publishing_status, updated_at DESC)
    """,
    """
    CREATE INDEX IF NOT EXISTS idx_articles_editor_dashboard
    ON articles (assigned_editor_id, updated_at DESC)
    """,
    """
    CREATE INDEX IF NOT EXISTS idx_agent_jobs_queue
    ON agent_jobs (status, queued_at)
    """,
    """
    CREATE INDEX IF NOT EXISTS idx_agent_jobs_article_timeline
    ON agent_jobs (article_id, job_type, queued_at)
    """,
    """
    CREATE INDEX IF NOT EXISTS idx_workflow_events_timeline
    ON workflow_events (article_id, created_at)
    """,
    """
    CREATE INDEX IF NOT EXISTS idx_research_run_manifests_article
    ON research_run_manifests (article_id, created_at)
    """,
    """
    CREATE INDEX IF NOT EXISTS idx_publish_commits_article
    ON publish_commits (article_id, created_at)
    """,
    """
    CREATE INDEX IF NOT EXISTS idx_script_config_version_events_site
    ON script_config_version_events (target_site_id, created_at)
    """,
)


SQLITE_SCHEMA_STATEMENTS: tuple[str, ...] = (
    """
    CREATE TABLE IF NOT EXISTS users (
        id TEXT PRIMARY KEY,
        email TEXT NOT NULL UNIQUE,
        display_name TEXT NOT NULL,
        role TEXT NOT NULL,
        created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
        updated_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP
    )
    """,
    """
    CREATE TABLE IF NOT EXISTS target_sites (
        id TEXT PRIMARY KEY,
        name TEXT NOT NULL,
        slug TEXT NOT NULL UNIQUE,
        publishing_type TEXT NOT NULL DEFAULT 'git_next',
        default_language TEXT NOT NULL DEFAULT 'en',
        brand_voice TEXT NOT NULL,
        audience TEXT NOT NULL,
        seo_rules TEXT NOT NULL DEFAULT '{}',
        visual_rules TEXT NOT NULL DEFAULT '{}',
        source_rules TEXT NOT NULL DEFAULT '{}',
        publishing_rules TEXT NOT NULL DEFAULT '{}',
        active_script_config_version_id TEXT,
        created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
        updated_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP
    )
    """,
    """
    CREATE TABLE IF NOT EXISTS script_config_versions (
        id TEXT PRIMARY KEY,
        target_site_id TEXT NOT NULL,
        version INTEGER NOT NULL,
        status TEXT NOT NULL,
        created_by TEXT NOT NULL,
        created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
        updated_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
        diff TEXT NOT NULL DEFAULT '{}',
        rollback_target_version_id TEXT,
        activated_at TEXT,
        publishing_yaml TEXT NOT NULL,
        publishing_yaml_hash TEXT NOT NULL,
        transform_script TEXT NOT NULL,
        transform_script_hash TEXT NOT NULL,
        UNIQUE (target_site_id, version)
    )
    """,
    """
    CREATE TABLE IF NOT EXISTS articles (
        id TEXT PRIMARY KEY,
        target_site_id TEXT NOT NULL,
        status TEXT NOT NULL,
        publishing_status TEXT NOT NULL,
        brief_description TEXT NOT NULL,
        working_title TEXT,
        language TEXT NOT NULL DEFAULT 'en',
        content_type TEXT NOT NULL DEFAULT 'longform_guide',
        primary_keyword TEXT,
        assigned_editor_id TEXT,
        created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
        updated_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP
    )
    """,
    """
    CREATE TABLE IF NOT EXISTS boundary_questions (
        id TEXT PRIMARY KEY,
        article_id TEXT NOT NULL,
        sort_order INTEGER NOT NULL,
        category TEXT NOT NULL DEFAULT 'general',
        question TEXT NOT NULL,
        answer TEXT,
        is_required INTEGER NOT NULL DEFAULT 1,
        created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
        updated_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
        UNIQUE (article_id, sort_order)
    )
    """,
    """
    CREATE TABLE IF NOT EXISTS article_plans (
        id TEXT PRIMARY KEY,
        article_id TEXT NOT NULL,
        version INTEGER NOT NULL,
        status TEXT NOT NULL,
        title_options TEXT NOT NULL DEFAULT '[]',
        recommended_title TEXT,
        reader_persona TEXT,
        search_intent TEXT,
        thesis TEXT,
        claims_to_prove TEXT NOT NULL DEFAULT '[]',
        evidence_needs TEXT NOT NULL DEFAULT '[]',
        visual_needs TEXT NOT NULL DEFAULT '[]',
        seo_notes TEXT NOT NULL DEFAULT '[]',
        source_requirements TEXT NOT NULL DEFAULT '[]',
        excluded_sources TEXT NOT NULL DEFAULT '[]',
        tone TEXT,
        audience TEXT,
        risks TEXT NOT NULL DEFAULT '[]',
        created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
        UNIQUE (article_id, version)
    )
    """,
    """
    CREATE TABLE IF NOT EXISTS plan_sections (
        id TEXT PRIMARY KEY,
        article_plan_id TEXT NOT NULL,
        sort_order INTEGER NOT NULL,
        heading TEXT NOT NULL,
        purpose TEXT,
        key_points TEXT NOT NULL DEFAULT '[]',
        evidence_needs TEXT NOT NULL DEFAULT '[]',
        claims_to_support TEXT NOT NULL DEFAULT '[]',
        target_word_count INTEGER,
        UNIQUE (article_plan_id, sort_order)
    )
    """,
    """
    CREATE TABLE IF NOT EXISTS evidence_items (
        id TEXT PRIMARY KEY,
        article_id TEXT NOT NULL,
        source_title TEXT NOT NULL,
        source_url TEXT NOT NULL,
        source_type TEXT NOT NULL,
        source_quality_score REAL NOT NULL,
        summary TEXT NOT NULL,
        supports_claims TEXT NOT NULL DEFAULT '[]',
        artifact_manifest_id TEXT,
        retrieved_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
        review_status TEXT NOT NULL DEFAULT 'PENDING'
    )
    """,
    """
    CREATE TABLE IF NOT EXISTS claims (
        id TEXT PRIMARY KEY,
        article_id TEXT NOT NULL,
        section_id TEXT,
        claim_text TEXT NOT NULL,
        support_status TEXT NOT NULL,
        risk_level TEXT NOT NULL,
        evidence_item_ids TEXT NOT NULL DEFAULT '[]',
        created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP
    )
    """,
    """
    CREATE TABLE IF NOT EXISTS article_drafts (
        id TEXT PRIMARY KEY,
        article_id TEXT NOT NULL,
        version INTEGER NOT NULL,
        title TEXT NOT NULL,
        slug TEXT NOT NULL,
        meta_title TEXT,
        meta_description TEXT,
        body_object_key TEXT,
        status TEXT NOT NULL,
        created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
        updated_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
        UNIQUE (article_id, version)
    )
    """,
    """
    CREATE TABLE IF NOT EXISTS assets (
        id TEXT PRIMARY KEY,
        article_id TEXT NOT NULL,
        asset_type TEXT NOT NULL,
        title TEXT NOT NULL,
        prompt TEXT,
        file_url TEXT,
        alt_text TEXT,
        caption TEXT,
        status TEXT NOT NULL,
        created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
        updated_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP
    )
    """,
    """
    CREATE TABLE IF NOT EXISTS workflow_events (
        id TEXT PRIMARY KEY,
        article_id TEXT NOT NULL,
        event_type TEXT NOT NULL,
        from_status TEXT,
        to_status TEXT,
        actor_user_id TEXT,
        payload TEXT NOT NULL DEFAULT '{}',
        created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP
    )
    """,
    """
    CREATE TABLE IF NOT EXISTS agent_jobs (
        id TEXT PRIMARY KEY,
        article_id TEXT,
        parent_job_id TEXT,
        attempt INTEGER NOT NULL DEFAULT 1,
        job_type TEXT NOT NULL,
        agent_profile TEXT NOT NULL,
        status TEXT NOT NULL,
        workspace_path TEXT,
        input_files TEXT NOT NULL DEFAULT '[]',
        output_files TEXT NOT NULL DEFAULT '[]',
        error_category TEXT,
        error_message TEXT,
        stdout TEXT NOT NULL DEFAULT '',
        stderr TEXT NOT NULL DEFAULT '',
        exit_code INTEGER,
        duration_ms INTEGER,
        queued_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
        started_at TEXT,
        finished_at TEXT
    )
    """,
    """
    CREATE TABLE IF NOT EXISTS research_run_manifests (
        id TEXT PRIMARY KEY,
        article_id TEXT NOT NULL,
        agent_job_id TEXT NOT NULL,
        s3_prefix TEXT NOT NULL,
        source_urls TEXT NOT NULL DEFAULT '[]',
        object_keys TEXT NOT NULL DEFAULT '[]',
        content_hashes TEXT NOT NULL DEFAULT '[]',
        artifact_types TEXT NOT NULL DEFAULT '[]',
        metadata_references TEXT NOT NULL DEFAULT '[]',
        artifacts TEXT NOT NULL DEFAULT '[]',
        created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP
    )
    """,
    """
    CREATE TABLE IF NOT EXISTS publish_commits (
        id TEXT PRIMARY KEY,
        article_id TEXT NOT NULL,
        target_site_id TEXT NOT NULL,
        repository_url TEXT NOT NULL,
        branch TEXT NOT NULL,
        commit_sha TEXT,
        content_bundle_manifest TEXT NOT NULL DEFAULT '{}',
        status TEXT NOT NULL,
        deployment_status TEXT,
        created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP
    )
    """,
    """
    CREATE TABLE IF NOT EXISTS prompt_versions (
        id TEXT PRIMARY KEY,
        prompt_key TEXT NOT NULL,
        version INTEGER NOT NULL,
        status TEXT NOT NULL,
        body TEXT NOT NULL,
        created_by TEXT NOT NULL,
        created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
        activated_at TEXT,
        diff TEXT NOT NULL DEFAULT '{}',
        UNIQUE (prompt_key, version)
    )
    """,
    """
    CREATE TABLE IF NOT EXISTS script_config_version_events (
        id TEXT PRIMARY KEY,
        target_site_id TEXT NOT NULL,
        version_id TEXT NOT NULL,
        event_type TEXT NOT NULL,
        actor_user_id TEXT,
        payload TEXT NOT NULL DEFAULT '{}',
        created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP
    )
    """,
    "CREATE INDEX IF NOT EXISTS idx_target_sites_slug ON target_sites (slug)",
    """
    CREATE INDEX IF NOT EXISTS idx_articles_dashboard
    ON articles (target_site_id, status, publishing_status, updated_at)
    """,
    """
    CREATE INDEX IF NOT EXISTS idx_articles_editor_dashboard
    ON articles (assigned_editor_id, updated_at)
    """,
    """
    CREATE INDEX IF NOT EXISTS idx_agent_jobs_queue
    ON agent_jobs (status, queued_at)
    """,
    """
    CREATE INDEX IF NOT EXISTS idx_agent_jobs_article_timeline
    ON agent_jobs (article_id, job_type, queued_at)
    """,
    """
    CREATE INDEX IF NOT EXISTS idx_workflow_events_timeline
    ON workflow_events (article_id, created_at)
    """,
    """
    CREATE INDEX IF NOT EXISTS idx_research_run_manifests_article
    ON research_run_manifests (article_id, created_at)
    """,
    """
    CREATE INDEX IF NOT EXISTS idx_publish_commits_article
    ON publish_commits (article_id, created_at)
    """,
    """
    CREATE INDEX IF NOT EXISTS idx_script_config_version_events_site
    ON script_config_version_events (target_site_id, created_at)
    """,
)


def schema_statements_for_dsn(dsn: str) -> tuple[str, ...]:
    if dsn.startswith("sqlite:///"):
        return SQLITE_SCHEMA_STATEMENTS
    return POSTGRES_SCHEMA_STATEMENTS


def setup_database(dsn: str) -> None:
    statements = schema_statements_for_dsn(dsn)
    if dsn.startswith("sqlite:///"):
        sqlite_path = dsn.removeprefix("sqlite:///")
        with closing(sqlite3.connect(sqlite_path)) as connection:
            for statement in statements:
                connection.execute(statement)
            connection.commit()
        return

    import psycopg

    with psycopg.connect(dsn) as connection:
        with connection.cursor() as cursor:
            for statement in statements:
                cursor.execute(statement)