use super::report_output::print_json_value;
use super::*;
use bat_core::domain::{
    GlossaryReviewStatus, GlossarySourceKind, GlossarySourceRecord, GlossaryTermDraft,
    GlossaryTermSnapshot, TranslationMemoryContext,
};
use bat_infrastructure::{SqliteGlossaryRepository, GLOSSARY_SCHEMA_VERSION};
use std::collections::BTreeMap;

pub(super) fn run_glossary_command(options: &CliOptions) -> anyhow::Result<()> {
    let method = glossary_method(options.command)?;
    if daemon_rpc_available(&options.state_dir)
        && options.resource_root.is_none()
        && !options.output_explicit
    {
        let _control_lock = DaemonControlLock::acquire(&options.state_dir)?;
        let report = daemon_rpc_call(&options.state_dir, method, glossary_cli_params(options)?)?;
        print_json_value(options.output_format, &report)?;
        return Ok(());
    }
    let path = glossary_cli_path(options)?;
    let report =
        match options.command {
            CliCommand::GlossarySummary => build_glossary_summary_report(&path)?,
            CliCommand::GlossaryQuery => build_glossary_query_report(
                &path,
                options.glossary_source_text.as_deref(),
                options.glossary_category.as_deref(),
                options.glossary_review_status.as_deref(),
                options.query_limit,
            )?,
            CliCommand::GlossaryDiagnose => build_glossary_diagnose_report(
                &path,
                options.glossary_source_text.as_deref().unwrap_or_default(),
                parse_glossary_context(options.glossary_context_json.as_deref())?,
            )?,
            CliCommand::GlossaryAdd | CliCommand::GlossaryUpdate => {
                let draft = glossary_term_draft(options)?;
                let reviewer = options.glossary_reviewer.as_deref();
                build_glossary_mutation_report(
                    &path,
                    &draft,
                    options.command == CliCommand::GlossaryUpdate,
                    reviewer,
                    options.glossary_reason.clone(),
                )?
            }
            CliCommand::GlossaryApprove | CliCommand::GlossaryDeprecate => {
                let term_id = options.glossary_term_id.as_deref().ok_or_else(|| {
                    anyhow::anyhow!("Glossary review 必须指定 --glossary-term-id")
                })?;
                let reviewer = options.glossary_reviewer.as_deref().ok_or_else(|| {
                    anyhow::anyhow!("Glossary review 必须指定 --glossary-reviewer")
                })?;
                let status = if options.command == CliCommand::GlossaryApprove {
                    GlossaryReviewStatus::Approved
                } else {
                    GlossaryReviewStatus::Deprecated
                };
                build_glossary_review_report(
                    &path,
                    term_id,
                    status,
                    reviewer,
                    options.glossary_reason.clone(),
                )?
            }
            CliCommand::GlossaryDelete => {
                let term_id = options.glossary_term_id.as_deref().ok_or_else(|| {
                    anyhow::anyhow!("Glossary delete 必须指定 --glossary-term-id")
                })?;
                let reviewer = options.glossary_reviewer.as_deref().ok_or_else(|| {
                    anyhow::anyhow!("Glossary delete 必须指定 --glossary-reviewer")
                })?;
                let reason = options
                    .glossary_reason
                    .as_deref()
                    .ok_or_else(|| anyhow::anyhow!("Glossary delete 必须指定 --glossary-reason"))?;
                build_glossary_delete_report(&path, term_id, reviewer, reason)?
            }
            _ => unreachable!(),
        };
    print_json_value(options.output_format, &report)
}

fn glossary_method(command: CliCommand) -> anyhow::Result<&'static str> {
    Ok(match command {
        CliCommand::GlossarySummary => RPC_METHOD_GLOSSARY_SUMMARY,
        CliCommand::GlossaryQuery => RPC_METHOD_GLOSSARY_QUERY,
        CliCommand::GlossaryAdd => RPC_METHOD_GLOSSARY_ADD,
        CliCommand::GlossaryUpdate => RPC_METHOD_GLOSSARY_UPDATE,
        CliCommand::GlossaryApprove => RPC_METHOD_GLOSSARY_APPROVE,
        CliCommand::GlossaryDeprecate => RPC_METHOD_GLOSSARY_DEPRECATE,
        CliCommand::GlossaryDelete => RPC_METHOD_GLOSSARY_DELETE,
        CliCommand::GlossaryDiagnose => RPC_METHOD_GLOSSARY_DIAGNOSE,
        _ => return Err(anyhow::anyhow!("不是 Glossary 命令")),
    })
}

fn glossary_cli_path(options: &CliOptions) -> anyhow::Result<std::path::PathBuf> {
    if let Some(path) = options.glossary_path.as_ref() {
        return lexical_absolute(path).map_err(anyhow::Error::msg);
    }
    let resource_root = options
        .resource_root
        .as_deref()
        .map(lexical_absolute)
        .transpose()
        .map_err(anyhow::Error::msg)?
        .unwrap_or(active_official_resource_root(&options.config.output_root)?);
    Ok(SqliteGlossaryRepository::repository_path(&resource_root))
}

fn glossary_cli_params(options: &CliOptions) -> anyhow::Result<Option<serde_json::Value>> {
    let mut params = serde_json::Map::new();
    if let Some(path) = options.glossary_path.as_ref() {
        params.insert("glossary_path".to_string(), serde_json::json!(path));
    }
    match options.command {
        CliCommand::GlossarySummary => {}
        CliCommand::GlossaryQuery => {
            if let Some(source_text) = options.glossary_source_text.as_deref() {
                params.insert("source_text".to_string(), serde_json::json!(source_text));
            }
            if let Some(category) = options.glossary_category.as_deref() {
                params.insert("category".to_string(), serde_json::json!(category));
            }
            if let Some(status) = options.glossary_review_status.as_deref() {
                params.insert("review_status".to_string(), serde_json::json!(status));
            }
            params.insert("limit".to_string(), serde_json::json!(options.query_limit));
        }
        CliCommand::GlossaryDiagnose => {
            let source_text = options.glossary_source_text.as_deref().ok_or_else(|| {
                anyhow::anyhow!("Glossary diagnose 必须指定 --glossary-source-text")
            })?;
            params.insert("source_text".to_string(), serde_json::json!(source_text));
            params.insert(
                "context".to_string(),
                serde_json::json!(parse_glossary_context(
                    options.glossary_context_json.as_deref()
                )?),
            );
        }
        CliCommand::GlossaryAdd | CliCommand::GlossaryUpdate => {
            let draft = glossary_term_draft(options)?;
            params.extend(
                serde_json::to_value(draft)?
                    .as_object()
                    .cloned()
                    .unwrap_or_default(),
            );
            if options.command == CliCommand::GlossaryUpdate {
                params.insert(
                    "reviewer".to_string(),
                    serde_json::json!(options.glossary_reviewer.as_deref().unwrap_or_default()),
                );
                if let Some(reason) = options.glossary_reason.as_deref() {
                    params.insert("reason".to_string(), serde_json::json!(reason));
                }
            }
        }
        CliCommand::GlossaryApprove | CliCommand::GlossaryDeprecate => {
            params.insert(
                "term_id".to_string(),
                serde_json::json!(options.glossary_term_id.as_deref().unwrap_or_default()),
            );
            params.insert(
                "reviewer".to_string(),
                serde_json::json!(options.glossary_reviewer.as_deref().unwrap_or_default()),
            );
            if let Some(reason) = options.glossary_reason.as_deref() {
                params.insert("reason".to_string(), serde_json::json!(reason));
            }
        }
        CliCommand::GlossaryDelete => {
            params.insert(
                "term_id".to_string(),
                serde_json::json!(options.glossary_term_id.as_deref().unwrap_or_default()),
            );
            params.insert(
                "reviewer".to_string(),
                serde_json::json!(options.glossary_reviewer.as_deref().unwrap_or_default()),
            );
            params.insert(
                "reason".to_string(),
                serde_json::json!(options.glossary_reason.as_deref().unwrap_or_default()),
            );
        }
        _ => unreachable!(),
    }
    Ok(Some(serde_json::Value::Object(params)))
}

fn glossary_term_draft(options: &CliOptions) -> anyhow::Result<GlossaryTermDraft> {
    let term_id = required_option(options.glossary_term_id.as_deref(), "--glossary-term-id")?;
    let source_term = required_option(
        options.glossary_source_term.as_deref(),
        "--glossary-source-term",
    )?;
    let recommended_translation = required_option(
        options.glossary_recommended_translation.as_deref(),
        "--glossary-recommended-translation",
    )?;
    let aliases = parse_string_array(
        options.glossary_aliases_json.as_deref(),
        "--glossary-aliases-json",
    )?;
    let allowed_translations = parse_string_array(
        options.glossary_allowed_translations_json.as_deref(),
        "--glossary-allowed-translations-json",
    )?;
    let scope = parse_glossary_context(options.glossary_scope_json.as_deref())?;
    let source_kind = options.glossary_source_kind.as_deref().unwrap_or("manual");
    let source_kind = GlossarySourceKind::parse(source_kind)
        .ok_or_else(|| anyhow::anyhow!("Glossary source kind 无效：{source_kind}"))?;
    let review_status = options.glossary_review_status.as_deref().unwrap_or("draft");
    let review_status = GlossaryReviewStatus::parse(review_status)
        .ok_or_else(|| anyhow::anyhow!("Glossary review status 无效：{review_status}"))?;
    let now = unix_seconds_now();
    Ok(GlossaryTermDraft {
        term_id,
        definition: GlossaryTermSnapshot {
            source_term,
            aliases,
            recommended_translation,
            allowed_translations,
            source_language: options.glossary_source_language.clone(),
            target_language: options.glossary_target_language.clone(),
            category: options.glossary_category.clone(),
            priority: options.glossary_priority,
            scope,
        },
        review_status,
        source: GlossarySourceRecord {
            source_kind,
            source_ref: options.glossary_source_ref.clone(),
            source_author: options.glossary_source_author.clone(),
            source_note: options.glossary_source_note.clone(),
            observed_unix_seconds: now,
        },
    })
}

fn required_option(value: Option<&str>, label: &str) -> anyhow::Result<String> {
    value
        .map(str::trim)
        .filter(|value| !value.is_empty())
        .map(str::to_string)
        .ok_or_else(|| anyhow::anyhow!("Glossary 必须指定 {label}"))
}

fn parse_string_array(value: Option<&str>, label: &str) -> anyhow::Result<Vec<String>> {
    let Some(value) = value else {
        return Ok(Vec::new());
    };
    serde_json::from_str(value)
        .map_err(|error| anyhow::anyhow!("{label} 必须是 JSON string array：{error}"))
}

fn parse_glossary_context(value: Option<&str>) -> anyhow::Result<TranslationMemoryContext> {
    let Some(value) = value else {
        return Ok(BTreeMap::new());
    };
    serde_json::from_str(value)
        .map_err(|error| anyhow::anyhow!("Glossary context 必须是 JSON object：{error}"))
}

pub(super) fn build_glossary_summary_report(
    path: &std::path::Path,
) -> anyhow::Result<serde_json::Value> {
    if !sqlite_file_exists_no_symlink(path, "Glossary 数据库")? {
        return Ok(serde_json::json!({
            "available": false,
            "path": path,
            "reason": "database_missing",
        }));
    }
    let runtime = tokio::runtime::Builder::new_current_thread()
        .enable_all()
        .build()?;
    let summary = runtime.block_on(async {
        let repository = SqliteGlossaryRepository::open(path)
            .await
            .map_err(|error| anyhow::anyhow!("{error}"))?;
        repository
            .summary()
            .await
            .map_err(|error| anyhow::anyhow!("{error}"))
    })?;
    Ok(serde_json::json!({
        "available": true,
        "path": path,
        "schema_version": GLOSSARY_SCHEMA_VERSION,
        "summary": summary,
    }))
}

pub(super) fn build_glossary_query_report(
    path: &std::path::Path,
    source_text: Option<&str>,
    category: Option<&str>,
    review_status: Option<&str>,
    limit: usize,
) -> anyhow::Result<serde_json::Value> {
    let status = review_status
        .map(|value| {
            GlossaryReviewStatus::parse(value)
                .ok_or_else(|| anyhow::anyhow!("Glossary review_status 无效"))
        })
        .transpose()?;
    if !sqlite_file_exists_no_symlink(path, "Glossary 数据库")? {
        return Ok(serde_json::json!({
            "available": false,
            "path": path,
            "source_text": source_text,
            "terms": [],
            "reason": "database_missing",
        }));
    }
    let runtime = tokio::runtime::Builder::new_current_thread()
        .enable_all()
        .build()?;
    let terms = runtime.block_on(async {
        let repository = SqliteGlossaryRepository::open(path)
            .await
            .map_err(|error| anyhow::anyhow!("{error}"))?;
        repository
            .query(source_text, category, status, limit)
            .await
            .map_err(|error| anyhow::anyhow!("{error}"))
    })?;
    Ok(serde_json::json!({
        "available": true,
        "path": path,
        "source_text": source_text,
        "terms": terms,
    }))
}

pub(super) fn build_glossary_diagnose_report(
    path: &std::path::Path,
    source_text: &str,
    context: TranslationMemoryContext,
) -> anyhow::Result<serde_json::Value> {
    if source_text.trim().is_empty() {
        return Err(anyhow::anyhow!("Glossary diagnose 的 source_text 不能为空"));
    }
    if !sqlite_file_exists_no_symlink(path, "Glossary 数据库")? {
        return Ok(serde_json::json!({
            "available": false,
            "path": path,
            "source_text": source_text,
            "context": context,
            "evaluation": {
                "constraints": [],
                "diagnostics": [],
                "blocked": false
            },
            "reason": "database_missing",
        }));
    }
    let runtime = tokio::runtime::Builder::new_current_thread()
        .enable_all()
        .build()?;
    let evaluation = runtime.block_on(async {
        let repository = SqliteGlossaryRepository::open(path)
            .await
            .map_err(|error| anyhow::anyhow!("{error}"))?;
        repository
            .diagnose(source_text, &context)
            .await
            .map_err(|error| anyhow::anyhow!("{error}"))
    })?;
    Ok(serde_json::json!({
        "available": true,
        "path": path,
        "source_text": source_text,
        "context": context,
        "evaluation": evaluation,
    }))
}

pub(super) fn build_glossary_mutation_report(
    path: &std::path::Path,
    draft: &GlossaryTermDraft,
    update: bool,
    reviewer: Option<&str>,
    reason: Option<String>,
) -> anyhow::Result<serde_json::Value> {
    let runtime = tokio::runtime::Builder::new_current_thread()
        .enable_all()
        .build()?;
    let term = runtime.block_on(async {
        let repository = SqliteGlossaryRepository::new(path)
            .await
            .map_err(|error| anyhow::anyhow!("{error}"))?;
        let result = if update {
            repository
                .update(
                    draft.clone(),
                    reviewer.ok_or_else(|| anyhow::anyhow!("Glossary update 需要 reviewer"))?,
                    reason,
                )
                .await
        } else {
            repository.add(draft.clone()).await
        };
        result.map_err(|error| anyhow::anyhow!("{error}"))
    })?;
    Ok(serde_json::json!({
        "available": true,
        "path": path,
        "schema_version": GLOSSARY_SCHEMA_VERSION,
        "term": term,
    }))
}

pub(super) fn build_glossary_review_report(
    path: &std::path::Path,
    term_id: &str,
    status: GlossaryReviewStatus,
    reviewer: &str,
    reason: Option<String>,
) -> anyhow::Result<serde_json::Value> {
    let runtime = tokio::runtime::Builder::new_current_thread()
        .enable_all()
        .build()?;
    let term = runtime.block_on(async {
        let repository = SqliteGlossaryRepository::open(path)
            .await
            .map_err(|error| anyhow::anyhow!("{error}"))?;
        repository
            .review(term_id, status, reviewer, reason)
            .await
            .map_err(|error| anyhow::anyhow!("{error}"))
    })?;
    Ok(serde_json::json!({
        "available": true,
        "path": path,
        "term": term,
    }))
}

pub(super) fn build_glossary_delete_report(
    path: &std::path::Path,
    term_id: &str,
    reviewer: &str,
    reason: &str,
) -> anyhow::Result<serde_json::Value> {
    let runtime = tokio::runtime::Builder::new_current_thread()
        .enable_all()
        .build()?;
    let term = runtime.block_on(async {
        let repository = SqliteGlossaryRepository::open(path)
            .await
            .map_err(|error| anyhow::anyhow!("{error}"))?;
        repository
            .delete(term_id, reviewer, reason)
            .await
            .map_err(|error| anyhow::anyhow!("{error}"))
    })?;
    Ok(serde_json::json!({
        "available": true,
        "path": path,
        "schema_version": GLOSSARY_SCHEMA_VERSION,
        "deleted": true,
        "term": term,
    }))
}

pub(super) fn glossary_rpc_envelope(
    request_id: String,
    result: Result<serde_json::Value, ApiError>,
) -> RpcEnvelope {
    match result {
        Ok(data) => rpc_envelope_ok(request_id, "ok", data),
        Err(error) => rpc_envelope_error(request_id, error),
    }
}

pub(super) fn glossary_summary_rpc_report(
    state_dir: &Path,
    output_root: &Path,
    default_path: Option<&Path>,
    params: Option<&serde_json::Value>,
) -> Result<serde_json::Value, ApiError> {
    let path = glossary_rpc_path(
        state_dir,
        output_root,
        default_path,
        params,
        RPC_METHOD_GLOSSARY_SUMMARY,
    )?;
    build_glossary_summary_report(&path)
        .map_err(|error| glossary_internal_error(RPC_METHOD_GLOSSARY_SUMMARY, error))
}

pub(super) fn glossary_query_rpc_report(
    state_dir: &Path,
    output_root: &Path,
    default_path: Option<&Path>,
    params: Option<&serde_json::Value>,
) -> Result<serde_json::Value, ApiError> {
    let params = glossary_params(params, RPC_METHOD_GLOSSARY_QUERY)?;
    let source_text = glossary_string(&params, "source_text", RPC_METHOD_GLOSSARY_QUERY)?;
    let category = glossary_string(&params, "category", RPC_METHOD_GLOSSARY_QUERY)?;
    let review_status = glossary_string(&params, "review_status", RPC_METHOD_GLOSSARY_QUERY)?;
    let limit = glossary_limit(&params, RPC_METHOD_GLOSSARY_QUERY)?;
    let path = glossary_rpc_path(
        state_dir,
        output_root,
        default_path,
        Some(&serde_json::Value::Object(params.clone())),
        RPC_METHOD_GLOSSARY_QUERY,
    )?;
    build_glossary_query_report(&path, source_text, category, review_status, limit)
        .map_err(|error| glossary_internal_error(RPC_METHOD_GLOSSARY_QUERY, error))
}

pub(super) fn glossary_diagnose_rpc_report(
    state_dir: &Path,
    output_root: &Path,
    default_path: Option<&Path>,
    params: Option<&serde_json::Value>,
) -> Result<serde_json::Value, ApiError> {
    let params = glossary_params(params, RPC_METHOD_GLOSSARY_DIAGNOSE)?;
    let source_text = glossary_string(&params, "source_text", RPC_METHOD_GLOSSARY_DIAGNOSE)?
        .ok_or_else(|| glossary_invalid(RPC_METHOD_GLOSSARY_DIAGNOSE, "缺少 source_text"))?;
    let context = glossary_context(&params, RPC_METHOD_GLOSSARY_DIAGNOSE)?;
    let path = glossary_rpc_path(
        state_dir,
        output_root,
        default_path,
        Some(&serde_json::Value::Object(params.clone())),
        RPC_METHOD_GLOSSARY_DIAGNOSE,
    )?;
    build_glossary_diagnose_report(&path, source_text, context)
        .map_err(|error| glossary_internal_error(RPC_METHOD_GLOSSARY_DIAGNOSE, error))
}

pub(super) fn glossary_mutation_rpc_report(
    state_dir: &Path,
    output_root: &Path,
    default_path: Option<&Path>,
    params: Option<&serde_json::Value>,
    update: bool,
) -> Result<serde_json::Value, ApiError> {
    let method = if update {
        RPC_METHOD_GLOSSARY_UPDATE
    } else {
        RPC_METHOD_GLOSSARY_ADD
    };
    let params = glossary_params(params, method)?;
    let draft: GlossaryTermDraft =
        serde_json::from_value(serde_json::Value::Object(params.clone())).map_err(|error| {
            glossary_invalid(method, format!("Glossary term 参数无效：{error}"))
        })?;
    let reviewer = glossary_string(&params, "reviewer", method)?;
    if update && reviewer.is_none() {
        return Err(glossary_invalid(method, "update 缺少 reviewer"));
    }
    let reason = glossary_string(&params, "reason", method)?.map(str::to_string);
    let path = glossary_rpc_path(
        state_dir,
        output_root,
        default_path,
        Some(&serde_json::Value::Object(params.clone())),
        method,
    )?;
    build_glossary_mutation_report(&path, &draft, update, reviewer, reason)
        .map_err(|error| glossary_internal_error(method, error))
}

pub(super) fn glossary_review_rpc_report(
    state_dir: &Path,
    output_root: &Path,
    default_path: Option<&Path>,
    params: Option<&serde_json::Value>,
    status: GlossaryReviewStatus,
) -> Result<serde_json::Value, ApiError> {
    let method = if status == GlossaryReviewStatus::Approved {
        RPC_METHOD_GLOSSARY_APPROVE
    } else {
        RPC_METHOD_GLOSSARY_DEPRECATE
    };
    let params = glossary_params(params, method)?;
    let term_id = glossary_string(&params, "term_id", method)?
        .ok_or_else(|| glossary_invalid(method, "缺少 term_id"))?;
    let reviewer = glossary_string(&params, "reviewer", method)?
        .ok_or_else(|| glossary_invalid(method, "缺少 reviewer"))?;
    let reason = glossary_string(&params, "reason", method)?.map(str::to_string);
    let path = glossary_rpc_path(
        state_dir,
        output_root,
        default_path,
        Some(&serde_json::Value::Object(params.clone())),
        method,
    )?;
    build_glossary_review_report(&path, term_id, status, reviewer, reason)
        .map_err(|error| glossary_internal_error(method, error))
}

pub(super) fn glossary_delete_rpc_report(
    state_dir: &Path,
    output_root: &Path,
    default_path: Option<&Path>,
    params: Option<&serde_json::Value>,
) -> Result<serde_json::Value, ApiError> {
    let params = glossary_params(params, RPC_METHOD_GLOSSARY_DELETE)?;
    let term_id = glossary_string(&params, "term_id", RPC_METHOD_GLOSSARY_DELETE)?
        .ok_or_else(|| glossary_invalid(RPC_METHOD_GLOSSARY_DELETE, "缺少 term_id"))?;
    let reviewer = glossary_string(&params, "reviewer", RPC_METHOD_GLOSSARY_DELETE)?
        .ok_or_else(|| glossary_invalid(RPC_METHOD_GLOSSARY_DELETE, "缺少 reviewer"))?;
    let reason = glossary_string(&params, "reason", RPC_METHOD_GLOSSARY_DELETE)?
        .ok_or_else(|| glossary_invalid(RPC_METHOD_GLOSSARY_DELETE, "缺少 reason"))?;
    let path = glossary_rpc_path(
        state_dir,
        output_root,
        default_path,
        Some(&serde_json::Value::Object(params.clone())),
        RPC_METHOD_GLOSSARY_DELETE,
    )?;
    build_glossary_delete_report(&path, term_id, reviewer, reason)
        .map_err(|error| glossary_internal_error(RPC_METHOD_GLOSSARY_DELETE, error))
}

fn glossary_rpc_path(
    state_dir: &Path,
    output_root: &Path,
    default_path: Option<&Path>,
    params: Option<&serde_json::Value>,
    method: &'static str,
) -> Result<std::path::PathBuf, ApiError> {
    if let Some(path) = params
        .and_then(|value| value.get("glossary_path"))
        .and_then(serde_json::Value::as_str)
        .map(str::trim)
        .filter(|value| !value.is_empty())
    {
        return lexical_absolute(Path::new(path))
            .map_err(|error| glossary_internal_error(method, anyhow::anyhow!(error)));
    }
    if let Some(path) = default_path {
        return lexical_absolute(path)
            .map_err(|error| glossary_internal_error(method, anyhow::anyhow!(error)));
    }
    let (_, version_state) = read_daemon_resource_state(state_dir)
        .map_err(|error| glossary_internal_error(method, error))?;
    if let Some(record) = version_state
        .as_ref()
        .and_then(|state| state.current_completed_version.as_ref())
    {
        return Ok(SqliteGlossaryRepository::repository_path(
            &record.resource_root,
        ));
    }
    Ok(SqliteGlossaryRepository::repository_path(output_root))
}

fn glossary_params(
    params: Option<&serde_json::Value>,
    method: &'static str,
) -> Result<serde_json::Map<String, serde_json::Value>, ApiError> {
    match params {
        None | Some(serde_json::Value::Null) => Ok(serde_json::Map::new()),
        Some(serde_json::Value::Object(value)) => Ok(value.clone()),
        Some(_) => Err(glossary_invalid(method, "params 必须是 JSON object")),
    }
}

fn glossary_string<'a>(
    params: &'a serde_json::Map<String, serde_json::Value>,
    key: &str,
    method: &'static str,
) -> Result<Option<&'a str>, ApiError> {
    let Some(value) = params.get(key) else {
        return Ok(None);
    };
    if value.is_null() {
        return Ok(None);
    }
    value
        .as_str()
        .map(str::trim)
        .filter(|value| !value.is_empty())
        .ok_or_else(|| glossary_invalid(method, format!("{key} 必须是非空字符串")))
        .map(Some)
}

fn glossary_context(
    params: &serde_json::Map<String, serde_json::Value>,
    method: &'static str,
) -> Result<TranslationMemoryContext, ApiError> {
    let Some(value) = params
        .get("context")
        .or_else(|| params.get("source_context"))
    else {
        return Ok(BTreeMap::new());
    };
    serde_json::from_value(value.clone()).map_err(|error| {
        glossary_invalid(method, format!("context 必须是 JSON string map：{error}"))
    })
}

fn glossary_limit(
    params: &serde_json::Map<String, serde_json::Value>,
    method: &'static str,
) -> Result<usize, ApiError> {
    let limit = params
        .get("limit")
        .and_then(serde_json::Value::as_u64)
        .unwrap_or(100);
    let limit = usize::try_from(limit)
        .map_err(|error| glossary_invalid(method, format!("limit 无效：{error}")))?;
    if !(1..=1000).contains(&limit) {
        return Err(glossary_invalid(method, "limit 必须在 1..=1000 范围内"));
    }
    Ok(limit)
}

fn glossary_invalid(method: &'static str, message: impl Into<String>) -> ApiError {
    ApiError::new(ErrorCode::RPC_INVALID_PARAMS, method, message.into())
}

fn glossary_internal_error(method: &'static str, error: anyhow::Error) -> ApiError {
    ApiError::new(ErrorCode::INTERNAL, method, error.to_string())
}