/*
 * git.mergeBranch storage core.
 * Owns the fixed git-merge branch contract and delegates host execution to BaseToolExecutorPort.git.runGit.
 */
export const gitMergeBranchDescriptor = {
    toolId: "git.mergeBranch",
    toolKind: "git.mergeBranch",
    capability: "merge-branch",
    route: "agent_executionEngine.basic_toolLayer.baseTools.gitBase.branch",
    defaultDryRun: true,
    defaultDispatch: "dry-run",
    tapOwnsApproval: true,
    requiresTapApproval: true,
    runtimeEntryPort: "BaseToolExecutorPort.git.runGit",
    operationRisk: "history-mutation",
    permissionsRequired: ["git:read", "git:write", "filesystem:read", "filesystem:write"],
    defaultTimeoutMs: 30_000,
    maxTimeoutMs: 600_000,
    unsafeSideEffects: true,
};
function isRecord(value) {
    return typeof value === "object" && value !== null && !Array.isArray(value);
}
function stringValue(value) {
    return typeof value === "string" ? value : undefined;
}
function booleanValue(value) {
    return typeof value === "boolean" ? value : undefined;
}
function stringArrayValue(value) {
    if (value === undefined)
        return undefined;
    if (!Array.isArray(value) || value.some((item) => typeof item !== "string"))
        return undefined;
    return value;
}
function cleanList(values) {
    if (!Array.isArray(values))
        return [];
    return [...new Set(values.map((value) => value.trim()).filter(Boolean))];
}
function dryRunEnabled(context) {
    return context?.dryRun !== false;
}
function invocationId(context) {
    return stringValue(context?.invocationId)?.trim() || "git.mergeBranch:dry-run";
}
function runtimeId(context) {
    return stringValue(context?.runtimeId)?.trim() || "runtime.unspecified";
}
function auditEvent(type, context, repositoryPath, metadata) {
    return {
        type,
        toolId: gitMergeBranchDescriptor.toolId,
        invocationId: invocationId(context),
        dryRun: dryRunEnabled(context),
        repositoryPath,
        metadata: {
            ...(context?.auditMetadata ?? {}),
            ...(metadata ?? {}),
        },
    };
}
function failure(code, message, boundary, context, repositoryPath) {
    return {
        ok: false,
        toolId: gitMergeBranchDescriptor.toolId,
        error: {
            code,
            message,
            boundary,
            publicSafe: true,
            safeForRuntimeInspection: true,
            internalDetailExposed: false,
        },
        audit: [auditEvent("agentCore.basicTool.git.mergeBranch.rejected", context, repositoryPath, { code })],
        events: ["basicTool.git.mergeBranch.rejected"],
    };
}
function normalizeContext(rawContext, legacyRequest) {
    const contextRecord = rawContext === undefined ? {} : rawContext;
    if (!isRecord(contextRecord)) {
        return failure("INVALID_CONTEXT", "git.mergeBranch context must be an object", "input", undefined);
    }
    const guard = contextRecord.guard;
    if (guard !== undefined && !isRecord(guard)) {
        return failure("INVALID_CONTEXT", "git.mergeBranch context.guard must be an object", "input", undefined);
    }
    const allowedRepositoryRoots = stringArrayValue(contextRecord.allowedRepositoryRoots);
    if (contextRecord.allowedRepositoryRoots !== undefined && allowedRepositoryRoots === undefined) {
        return failure("INVALID_CONTEXT", "git.mergeBranch context.allowedRepositoryRoots must be a string array", "input", undefined);
    }
    const grantedPermissions = stringArrayValue(contextRecord.grantedPermissions);
    if (contextRecord.grantedPermissions !== undefined && grantedPermissions === undefined) {
        return failure("INVALID_CONTEXT", "git.mergeBranch context.grantedPermissions must be a string array", "input", undefined);
    }
    const auditMetadata = isRecord(contextRecord.auditMetadata) ? contextRecord.auditMetadata : undefined;
    if (contextRecord.auditMetadata !== undefined && auditMetadata === undefined) {
        return failure("INVALID_CONTEXT", "git.mergeBranch context.auditMetadata must be an object", "input", undefined);
    }
    return {
        runtimeId: stringValue(contextRecord.runtimeId) ?? stringValue(legacyRequest.runtimeId),
        sessionId: stringValue(contextRecord.sessionId),
        invocationId: stringValue(contextRecord.invocationId) ?? stringValue(legacyRequest.invocationId),
        dryRun: booleanValue(contextRecord.dryRun) ?? booleanValue(legacyRequest.dryRun),
        guard: guard === undefined
            ? undefined
            : {
                allowed: booleanValue(guard.allowed),
                accepted: booleanValue(guard.accepted),
                reason: stringValue(guard.reason),
            },
        allowedRepositoryRoots,
        grantedPermissions: grantedPermissions,
        auditMetadata,
    };
}
function normalizeRepositoryPath(value, context) {
    const normalized = stringValue(value)?.trim() ?? "";
    if (normalized.length === 0) {
        return failure("MISSING_REPOSITORY_PATH", "git.mergeBranch requires target.repositoryPath", "input", context);
    }
    if (normalized.includes("\0")) {
        return failure("INVALID_ARGUMENT", "git.mergeBranch repositoryPath cannot contain NUL bytes", "input", context, normalized);
    }
    return normalized;
}
function isUnsafeRef(value) {
    return (value.length === 0 ||
        value.includes("\0") ||
        /\s/u.test(value) ||
        value.startsWith("-") ||
        value.startsWith("/") ||
        value.endsWith("/") ||
        value.includes("..") ||
        value.includes("@{") ||
        value.includes("\\") ||
        value.includes("//") ||
        value.endsWith(".lock") ||
        value.includes(":"));
}
function normalizeSourceBranch(value, context, repositoryPath) {
    const normalized = stringValue(value)?.trim() ?? "";
    if (normalized.length === 0) {
        return failure("MISSING_BRANCH_NAME", "git.mergeBranch requires target.sourceBranch", "input", context, repositoryPath);
    }
    if (isUnsafeRef(normalized)) {
        return failure("UNSAFE_BRANCH_REF", "git.mergeBranch target.sourceBranch must be a safe branch ref", "input", context, repositoryPath);
    }
    return normalized;
}
function normalizeMode(value) {
    return value === "ff-only" || value === "no-ff" || value === "squash" ? value : "default";
}
function normalizeCommitMessage(value, context, repositoryPath) {
    if (value === undefined)
        return undefined;
    const normalized = stringValue(value)?.trim() ?? "";
    if (normalized.length === 0)
        return undefined;
    if (normalized.includes("\0")) {
        return failure("INVALID_ARGUMENT", "git.mergeBranch target.commitMessage cannot contain NUL bytes", "input", context, repositoryPath);
    }
    return normalized;
}
function normalizeTimeout(value, context, repositoryPath) {
    if (value === undefined)
        return undefined;
    if (typeof value !== "number" || !Number.isInteger(value) || value < 1 || value > gitMergeBranchDescriptor.maxTimeoutMs) {
        return failure("INVALID_TIMEOUT", `git.mergeBranch timeoutMs must be an integer from 1 to ${gitMergeBranchDescriptor.maxTimeoutMs}`, "input", context, repositoryPath);
    }
    return value;
}
function normalizeRequest(request) {
    if (request !== undefined && !isRecord(request)) {
        return failure("INVALID_ARGUMENT", "git.mergeBranch request must be an object", "input", undefined);
    }
    const requestRecord = isRecord(request) ? request : {};
    const context = normalizeContext(requestRecord.context, requestRecord);
    if ("ok" in context)
        return context;
    const targetRecord = isRecord(requestRecord.target) ? requestRecord.target : requestRecord;
    if (requestRecord.target !== undefined && !isRecord(requestRecord.target)) {
        return failure("INVALID_ARGUMENT", "git.mergeBranch target must be an object", "input", context);
    }
    const repositoryPath = normalizeRepositoryPath(targetRecord.repositoryPath, context);
    if (typeof repositoryPath !== "string")
        return repositoryPath;
    const sourceBranch = normalizeSourceBranch(targetRecord.sourceBranch ?? targetRecord.branchName ?? targetRecord.ref, context, repositoryPath);
    if (typeof sourceBranch !== "string")
        return sourceBranch;
    const commitMessage = normalizeCommitMessage(targetRecord.commitMessage ?? targetRecord.message, context, repositoryPath);
    if (commitMessage !== undefined && typeof commitMessage !== "string")
        return commitMessage;
    const timeoutMs = normalizeTimeout(requestRecord.timeoutMs, context, repositoryPath);
    if (timeoutMs !== undefined && typeof timeoutMs !== "number")
        return timeoutMs;
    return {
        target: {
            repositoryPath,
            sourceBranch,
            mode: normalizeMode(targetRecord.mode),
            commitMessage,
            noCommit: targetRecord.noCommit === true,
            allowUnrelatedHistories: targetRecord.allowUnrelatedHistories === true,
        },
        context,
        timeoutMs,
    };
}
function normalizeAllowedRoot(root) {
    const trimmed = root.trim();
    return trimmed === "/" ? trimmed : trimmed.replace(/\/+$/u, "");
}
function ensureScope(repositoryPath, context) {
    const allowedRoots = cleanList(context?.allowedRepositoryRoots).map(normalizeAllowedRoot);
    if (allowedRoots.length === 0)
        return undefined;
    const allowed = allowedRoots.some((root) => repositoryPath === root || repositoryPath.startsWith(`${root}/`));
    return allowed
        ? undefined
        : failure("SCOPE_REJECTED", "git.mergeBranch target repository is outside the allowed repository roots", "scope", context, repositoryPath);
}
function permissionsForTarget() {
    return ["git:read", "git:write", "filesystem:read", "filesystem:write"];
}
function ensurePermissions(target, context) {
    const granted = cleanList(context?.grantedPermissions);
    if (granted.length === 0)
        return undefined;
    const missing = permissionsForTarget().filter((permission) => !granted.includes(permission));
    return missing.length === 0
        ? undefined
        : failure("PERMISSION_DENIED", `git.mergeBranch is missing permissions: ${missing.join(", ")}`, "permission", context, target.repositoryPath);
}
function ensureGovernance(repositoryPath, context) {
    if (dryRunEnabled(context))
        return undefined;
    if (context.guard?.allowed === true || context.guard?.accepted === true)
        return undefined;
    return failure("GOVERNANCE_REJECTED", context.guard?.reason ?? "git.mergeBranch requires an affirmative runtime guard for real execution", "governance", context, repositoryPath);
}
function providerArgs(target) {
    return [
        "merge",
        ...(target.mode === "ff-only" ? ["--ff-only"] : []),
        ...(target.mode === "no-ff" ? ["--no-ff"] : []),
        ...(target.mode === "squash" ? ["--squash"] : []),
        ...(target.noCommit ? ["--no-commit"] : []),
        ...(target.allowUnrelatedHistories ? ["--allow-unrelated-histories"] : []),
        ...(target.commitMessage === undefined ? [] : ["-m", target.commitMessage]),
        target.sourceBranch,
    ];
}
function commandPreview(target) {
    return ["git", "-C", target.repositoryPath, ...providerArgs(target)];
}
const runtimeEntry = {
    owner: "runtime",
    port: "BaseToolExecutorPort.git.runGit",
    method: "runGit",
    binary: "git",
    argvMode: "fixed-merge-branch-history-mutation",
    allowedSubcommand: "merge",
};
function mayCreateCommit(target) {
    return target.mode !== "squash" && !target.noCommit;
}
function riskForTarget(target) {
    return {
        category: "history-mutation",
        riskLevel: "risky",
        mutatesRepository: true,
        mutatesWorkingTree: true,
        mutatesIndex: true,
        mayCreateCommit: mayCreateCommit(target),
        mayCreateConflicts: true,
        spawnsProcess: true,
        requiresTapApproval: true,
        runtimeOwnsExecution: true,
    };
}
function plan(normalized, dispatch, dryRun) {
    const risk = riskForTarget(normalized.target);
    return {
        toolId: "git.mergeBranch",
        toolKind: "git.mergeBranch",
        capability: "merge-branch",
        runtimeId: runtimeId(normalized.context),
        invocationId: invocationId(normalized.context),
        repositoryPath: normalized.target.repositoryPath,
        sourceBranch: normalized.target.sourceBranch,
        mode: normalized.target.mode,
        commitMessage: normalized.target.commitMessage,
        noCommit: normalized.target.noCommit,
        allowUnrelatedHistories: normalized.target.allowUnrelatedHistories,
        gitArgs: providerArgs(normalized.target),
        commandPreview: commandPreview(normalized.target),
        requiredPermissions: permissionsForTarget(),
        runtimeEntry,
        risk,
        dispatch,
        dryRun,
        wouldMutateWorkingTree: true,
        wouldMutateIndex: true,
        unsafeSideEffects: true,
        outputEnvelope: { stdoutPreview: "", stderrPreview: "", parsed: false },
        audit: {
            guard: "git-merge-runtime-guard",
            event: "basicTool.git.mergeBranch.planned",
            governanceRequired: true,
            tapCanWrap: true,
            metadata: normalized.context.auditMetadata ?? {},
        },
    };
}
function lineCount(text) {
    if (text.length === 0)
        return 0;
    return text.split(/\r?\n/u).length;
}
function firstOutputLine(stdout, stderr) {
    return `${stdout}\n${stderr}`
        .split(/\r?\n/u)
        .map((line) => line.trim())
        .find(Boolean);
}
export function parseGitMergeBranchResult(providerResult, target) {
    const combined = `${providerResult?.stdout ?? ""}\n${providerResult?.stderr ?? ""}`;
    return {
        parser: "git-merge-output-v1",
        sourceBranch: target.sourceBranch,
        mode: target.mode,
        noCommit: target.noCommit,
        allowUnrelatedHistories: target.allowUnrelatedHistories,
        exitCode: providerResult?.exitCode,
        stdoutLineCount: lineCount(providerResult?.stdout ?? ""),
        stderrLineCount: lineCount(providerResult?.stderr ?? ""),
        mergeHint: providerResult === undefined ? undefined : firstOutputLine(providerResult.stdout, providerResult.stderr),
        fastForward: /\bFast-forward\b/u.test(combined),
        conflictDetected: /\bCONFLICT\b/u.test(combined),
        mergeCommitCreated: providerResult?.exitCode === 0 && mayCreateCommit(target) && target.mode !== "ff-only",
    };
}
function success(normalized, dryRun, providerResult) {
    const executionPlan = plan(normalized, dryRun ? "dry-run" : "runtime-git-executor", dryRun);
    const risk = riskForTarget(normalized.target);
    return {
        ok: true,
        toolId: "git.mergeBranch",
        plan: executionPlan,
        output: {
            kind: "agentCore.basicTool.git.mergeBranch",
            target: normalized.target,
            runtimeEntry,
            risk,
            gitArgs: executionPlan.gitArgs,
            commandPreview: executionPlan.commandPreview,
            timeoutMs: normalized.timeoutMs ?? gitMergeBranchDescriptor.defaultTimeoutMs,
            dryRun,
            executionBlocked: dryRun,
            providerCalled: providerResult !== undefined,
            exitCode: providerResult?.exitCode,
            stdout: providerResult?.stdout,
            stderr: providerResult?.stderr,
            permissionsRequired: permissionsForTarget(),
            unsafeSideEffects: true,
            mergesBranch: true,
            resultEnvelope: parseGitMergeBranchResult(providerResult, normalized.target),
        },
        audit: [
            auditEvent(dryRun ? "agentCore.basicTool.git.mergeBranch.dryRun" : "agentCore.basicTool.git.mergeBranch.executed", normalized.context, normalized.target.repositoryPath, {
                sourceBranch: normalized.target.sourceBranch,
                mode: normalized.target.mode,
                noCommit: normalized.target.noCommit,
                exitCode: providerResult?.exitCode,
            }),
        ],
        events: [dryRun ? "basicTool.git.mergeBranch.dryRun" : "basicTool.git.mergeBranch.executed"],
    };
}
export function planGitBranchMerge(request = {}) {
    const normalized = normalizeRequest(request);
    if ("ok" in normalized)
        return normalized;
    const scopeFailure = ensureScope(normalized.target.repositoryPath, normalized.context);
    if (scopeFailure !== undefined)
        return scopeFailure;
    const permissionFailure = ensurePermissions(normalized.target, normalized.context);
    if (permissionFailure !== undefined)
        return permissionFailure;
    return success(normalized, true);
}
export const planGitMergeBranch = planGitBranchMerge;
export async function executeGitMergeBranch(request = {}) {
    const normalized = normalizeRequest(request);
    if ("ok" in normalized)
        return normalized;
    const scopeFailure = ensureScope(normalized.target.repositoryPath, normalized.context);
    if (scopeFailure !== undefined)
        return scopeFailure;
    const permissionFailure = ensurePermissions(normalized.target, normalized.context);
    if (permissionFailure !== undefined)
        return permissionFailure;
    const governanceFailure = ensureGovernance(normalized.target.repositoryPath, normalized.context);
    if (governanceFailure !== undefined)
        return governanceFailure;
    if (dryRunEnabled(normalized.context))
        return success(normalized, true);
    if (request.provider === undefined) {
        return failure("PROVIDER_UNAVAILABLE", "git.mergeBranch requires runtime.execEngine.git.runGit for real execution", "provider", normalized.context, normalized.target.repositoryPath);
    }
    try {
        const providerResult = await request.provider({
            repositoryPath: normalized.target.repositoryPath,
            args: providerArgs(normalized.target),
            timeoutMs: normalized.timeoutMs,
        }, normalized.context);
        return success(normalized, false, providerResult);
    }
    catch {
        return failure("PROVIDER_REJECTED", "git.mergeBranch provider rejected the request or failed safely", "provider", normalized.context, normalized.target.repositoryPath);
    }
}
